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Supercharged Local Directory File Browser

Makes directory index pages (either local or remote open directories) actually useful. Adds sidebar and preview pane; keyboard navigation and sorting; browse subdirectories; media playback with shuffle and loop options; support for playlists (m3u and EXTM3U) and cuesheets (.cue); preview images and fonts singly or with navigable grids; create, preview, edit, save markdown/plain text files; open font files, view complete glyph repertoire, save glyphs as .svg files; light and dark UI themes; more.

/* eslint-disable no-mixed-spaces-and-tabs */
/* eslint-disable no-useless-escape */
/* eslint-disable no-fallthrough */
/* eslint-disable no-case-declarations */
/* eslint-disable indent */
/* eslint-disable quotes */
// ==UserScript==
// @name			Supercharged Local Directory File Browser
// @version			6.0.0
// @description		Makes directory index pages (either local or remote open directories) actually useful. Adds sidebar and preview pane; keyboard navigation and sorting; browse subdirectories; media playback with shuffle and loop options; support for playlists (m3u and EXTM3U) and cuesheets (.cue); preview images and fonts singly or with navigable grids; create, preview, edit, save markdown/plain text files; open font files, view complete glyph repertoire, save glyphs as .svg files; light and dark UI themes; more.
// @author			gaspar_schot
// @license			GPL-3.0-or-later
// @homepageURL		https://openuserjs.org/scripts/gaspar_schot/Supercharged_Local_Directory_File_Browser
// @contributionURL https://paypal.me/mschrauzer
// @include			file://*
// @include			about:blank
// @include 		https://www.example.com/path/to/directory/*

// @require	  https://code.jquery.com/jquery-latest.min.js

// @require https://cdn.jsdelivr.net/npm/markdown-it@11.0.0/dist/markdown-it.min.js
// @require https://cdn.jsdelivr.net/npm/markdown-it-footnote@3.0.2/dist/markdown-it-footnote.min.js
// @require https://cdn.jsdelivr.net/npm/markdown-it-toc-done-right@2.1.0/dist/markdown-it-toc-made-right.min.js
// @require https://cdn.jsdelivr.net/npm/markdown-it-sub@1.0.0/dist/markdown-it-sub.min.js
// @require https://cdn.jsdelivr.net/npm/markdown-it-sup@1.0.0/dist/markdown-it-sup.min.js
// @require https://cdn.jsdelivr.net/npm/markdown-it-deflist@2.0.3/dist/markdown-it-deflist.min.js
// @require https://cdn.jsdelivr.net/npm/markdown-it-multimd-table@4.0.2/dist/markdown-it-multimd-table.min.js
// @require https://cdn.jsdelivr.net/npm/markdown-it-center-text@1.0.4/dist/markdown-it-center-text.min.js

// @require https://cdn.jsdelivr.net/npm/opentype.js@latest/dist/opentype.min.js

// UPDATE URL

// NOTE: This script was developed in Vivaldi, running on Mac OS Mojave. It has been tested in various Chrome and Gecko-based browsers.
// It has been minimally tested on Windows and not at all on other OSes. It should work, but please report any issues.
// The script does not work on local directories in Safari because Safari does not allow local directories to be browsed, but it will work on remote directories (or on local directories through a local server).

// NOTE: By default, Greasemonkey and Tampermonkey will not run scripts on file:/// urls, so for this script to work, you will have to enable it first.
// For Tampermonkey, go to Chrome extension page, and tick the 'Allow access to file URLs' checkbox at the Tampermonkey extension section.
// For Greasemonkey, open about:config and change greasemonkey.fileIsGreaseable to true.

// @namespace https://greasyfork.org/users/16170
// ==/UserScript==

(function() {
	'use strict';
	const $ = window.jQuery;
	// ***** USER SETTINGS ***** //
	const $settings = {
		// NOTE: These settings will be overwritten whenever the script is updated. Use the "Export User Settings" menu item to save them.
		// You can paste the exported settings between the two lines below:
		//--------------------------------------------------------//

		bookmarks: // N.B.: Directory links must end with "/", file links must end with another character.
		// You may add as many menus and links as you like; just copy the example below and edit as needed.
		// Local directory bookmarks must begin with "file:///"; external bookmarks must begin with the correct protocol ("http://" or "ftp://", etc.).
		[
			//	{ 'menu_title':'My Sample Menu',
			//		'links': [
			//			{ 'link_name':'My Directory Link 1', 'link':'file:///Path/To/My/Directory/' },
			//			{ 'link_name':'My Directory Link 2', 'link':'file:///Path/To/My/Directory_2/' },
			//			{ 'link_name':'My External Link', 'link':'https://www.mywebpage.com/' },
			//			{ 'link_name':'My File Link', 'link':'file:///Path/To/My/File.ext' },
			//		]},
			{ 'menu_title':'My Sample Bookmark Menu',
				'links': [
					{ 'link_name':'My Directory Link 1', 'link':'file:///Path/To/My/Directory/' },
					{ 'link_name':'My Directory Link 2', 'link':'file:///Path/To/My/Directory_2/' },
					{ 'link_name':'My External Link', 'link':'https://www.mywebpage.com/' },
					{ 'link_name':'My File Link', 'link':'file:///Path/To/My/File.ext' },
				]},
		],
		// GENERAL USER SETTINGS
		alternate_background: true,			// If true (default true), alternate sidebar row background color.
		apps_as_dirs: true,				// Un*x/Mac OS only: if true, treat apps as directories; allows app contents to be browsed. This is the default behavior for Chrome.
											// If false (default), treat apps as ignored files.
		autoload_media: true,				// If true (default), the first audio or video file found in a directory will be automatically selected and loaded for playback.
											// Also, cover art files (if any) will be loaded in the preview pane.
											// Files with 'cover','front','album','jacket','sleeve','cd','disc','insert','liner','notes' in the title will be loaded first in that order, with exact matches having preference.
											// Note that there can be false positives because a file will be matched whenever there is no exact match and one of these words appears in an image name.
											// Otherwise the first image file in directory will be loaded.
		autoload_index_files: true,		// If true (default: false), automatically select first "index.xxx" (.xxx !== .htm) file found in directory.
											// Note: the browser will automatically load any index.html files it finds in the directory, so the script will not work properly in such cases.
		theme: 'light',						// Options: 'light' or 'dark'
		sort_by: 'default',					// Choose from: 'name', 'size', 'date', 'kind', 'ext', 'default'.
											// default = Chrome sorting: dirs on top, files alphabetical.
		sort_direction: 'down',				// Choose from: 'up' or 'down' (default) (i.e., ascending or descending).
		dirs_on_top: false,					// If true, directories will always be listed firs except when sorting by "name" (since otherwise sorting by "name" would equal "default").
											// If false (default), directories and files will be sorted together. (In practice, dirs will typically still be separated when sorting by size, kind, and extension.)
		grid_font_size: 1,					// Default = 1
		grid_image_size: 184,				// Default = 184 (200px - 16px)
		show_details: true,					// If true (default), hide file and directory details; if false, show them.
		hide_ignored_items: false,			// If true, ignored files (= files the browser cannot natively open, e.g., common office and graphics files) will be hidden.
											// If false (default), ignored files will appear greyed-out.
		ignore_ignored_items: true,			// If true (default), clicking ignored file types (see $row_settings below) in the directory list will not cause the browser to attempt to open the file.
											// It is recommended to leave the default unchanged.
											// Ignored items can still be downloaded with ctrl-click or right-click.
		show_invisibles: true,				// Un*x/Mac OS only: If true (default), files or directories beginning with a "." will be hidden.
		show_numbers: true,					// If true (default true), number index items
		UI_font: 'system-ui, sans-serif',	// Choose an installed font for the UI; if undefined, use browser defaults instead.
		UI_font_size: '13px',				// Choose a default UI font size; use any standard CSS units.
		use_custom_icons: true,				// if true (default), use custom icons for dirs and files
											// if false, use browser/server default icons
		// TEXT EDITING SETTINGS
		enable_text_editing: true,			// If false (default), allow plain text files to be edited.
		editor_theme: 'default',			// Options: 'default' = "theme" setting, else always 'light' or 'dark'.
		default_text_view: 'preview_text',	// Options: 'source_text' or 'preview_text' for text editor.
											// Note that split_view = true overrides this setting.
		split_view: true,					// If true, show split view on plain text file load.
											// if true (default), use default preview_text setting.
		sync_scroll: true,					// If true (default: true), show split view on plain text file load
											// if false, use default preview_text setting.
		hide_sidebar: false, 				//
		play_all_media: true				// Continuous playback of all media files, not just selected media type.

		//--------------------------------------------------------//
		// Paste your exported settings between the above two lines.
	};

	// $ITEM_KIND:
	// DO NOT DELETE ANY EXISTING CATEGORIES!
	// Add file extensions for sorting and custom icon display to the existing categories.
	// You can also define your own new categories, but do not add an extension to more than one row_type category.
	// Do not add leading "." to the extensions.
	const $item_kind = {
		// myRowType: ['ext1','ext2'],
		dir:			['/'], // loaded in iframe#content_iframe
		app:			['app/','app','bat','cgi','com','exe','jar','msi','wsf'], // generally ignored; apps may be opened as directories
		alias:			['alias','desktop','directory','lnk','symlink','symlink/'],
		archive:		['7z','archive','b6z','bin','bzip','bz2','cbr','dmg','gz','iso','mpkg','pkg','rar','sit','sitx','tar','tar.gz','zip','zipx','zxp'], // ignored
		audio:			['aac','aif','aiff','ape','flac','m4a','mp3','ogg','opus','wav'], // loaded in audio#audio
		bin:			['a','bundle','dll','dyld','dylib','gem','icc','msi','pyc','pyo','o','rakefile','ri','so','xml','2'], // ignored
		code:			['bak','bash','bash_profile','bashrc','c','cfg','cnf','codes','coffee','conf','csh','cshrc','cson','css','cue','custom_aliases','d','default','description','dist','editorconfig','emacs','example','gemspec','gitconfig','gitignore','gitignore_global','h','hd','ini','js','json','jsx','less','list','local','login','logout','lua','mkshrc','old','pc','php','pl','plist','pre-oh-my-zsh','profile','pth','py','rb','rc','rdoc','sass','settings','sh','strings','taskrc','tcl','viminfo','vimrc','vue','yaml','yml','zlogin','zlogout','zpreztorc','zprofile','zsh','zshenv','zshrc'], //  treated as text, opened in iframe#content_iframe text editor
		database:		['accdb','db','dbf','mdb','pdb','sql', 'sqlite','sqlitedb','sqlite3'], // ignored
		ebook:			['azw','azw1','azw3','azw4','epub','ibook','kfx','mobi','tpz'], // ignored
		font:			['otf','ttf','woff','woff2','afm','pfb','pfm','tfm'], // opened in div#content_font
		graphics:		['afdesign','afpub','ai','book','dtp','eps','fm','icml','idml','indd','indt','inx','mif','pmd','pub','qxb','qxd','qxp','sla','swf','ai','arw','cr2','dng','eps','jpf','nef','psd','psd','raw','tif','tiff'], // ignored
		htm:			['htm','html','xhtm','xhtml'], // opened in iframe#content_iframe
		image:			['apng','bmp','gif','ico','jpeg','jpg','png','svg','webp'],
		link:			['url','webloc','inetloc'],
		markdown:		['md','markdown','mdown','mkdn','mkd','mdwn','mdtxt','mdtext'], // treated as text, opened in iframe#content_iframe text editor
		office:			['csv','doc','docx','epub','key','numbers','odf','ods','odt','pages','rtf','scriv','wpd','wps','xlr','xls','xlsx','xlm'], // ignored
		pdf:			['pdf'], // open in embed#content_pdf
		system:			['DS_Store','ds_store','icon','ics','spotlight-v100/','temporaryitems/','documentrevisions-v100/','trashes/','fseventsd/','dbfseventsd','file','localized','programdata'], // ignored system items
		text:			['log','nfo','txt','readme'], // opened in iframe#content_iframe text editor
		video:			['m4v','mov','mp4','mpeg','webm'] // loaded in video#content_video
	};
	// $ROW_SETTINGS: Ignore or Exclude files by extension
	const $row_settings = {
		// ignored: $item_kind or files with extensions added here will not be loaded if selected in the sidebar (prevents the browser from attempting to download the file).
		ignored: $item_kind.archive.concat( 'alias','m3u','m3u8', $item_kind.bin, $item_kind.database, $item_kind.graphics, $item_kind.ignored_image, $item_kind.office, $item_kind.system)
	};
	// ***** END USER SETTINGS ***** //

	// ## FEATURES INCLUDE:
	// - Converts the default index pages to show a navigable, sortable, and resizable sidebar with a preview pane for selected items, with light and dark themes.
	// - Works with local and remote directories; urls for remote directories must be added in the code above with an "@include" entry.
	// - Sidebar displays list of items in current directory. Select a sidebar item to show it in the content pane.
	// = Click a directory icon in the sidebar or select it and type Cmd/Ctrl Right Arrow to open subdirectory; click again to close or type Cmd/Ctrl Left Arrow.
	// - Arrow navigation in sidebar:
	//	 - Up and Down Arrows select next/prev item.
	//	 - Left and Right Arrows select next/prev item of same type.
	// - Navigate sidebar by typed string.
	// - Show/Hide file details (size (if avail), date modified (if avail), kind, extension).
	// - Sort sidebar items by name or file details.
	//	 - Default sort = sort by name with folders on top.
	// - Preview all file types supported natively by browser (html, text, images, pdf, audio, video, etc.) and preview fonts.
	// - Preview, create, and edit markdown (if your browser supports it) and plain text files, with option to save files locally.
	//	 - Markdown rendered with markdownit.js ( https://github.com/markdown-it/markdown-it ).
	//	    - Uses Github Markdown styles for preview ( https://github.com/sindresorhus/github-markdown-css ), with a few customizations.
	//	 - Support for:
	//	    - TOC creation ( `${toc}` ) ( https://github.com/nagaozen/markdown-it-toc-done-right )
	// 	    - Multimarkdown table syntax ( https://github.com/RedBug312/markdown-it-multimd-table )
	//	    - Live checkboxes ( `\[ ], [x]` ), allowed in lists and deflists.
	//	    - Superscript ( `^sup^` ) ( https://github.com/markdown-it/markdown-it-sup )
	//	    - Subscript ( `~sub~` ) ( https://github.com/markdown-it/markdown-it-sub )
	//	    - Definition lists ( https://github.com/markdown-it/markdown-it-deflist; for syntax, see http://pandoc.org/MANUAL.html#definition-lists )
	//	    - Centered text ( `->centered<-` ) ( https://github.com/jay-hodgson/markdown-it-center-text )
	//	    - Footnotes ( https://github.com/markdown-it/markdown-it-footnote )
	//	 - View source text, preview, or split pane with proportional sync scroll.
	//	 - Save edited source text or previewed HTML.
	// - Create and edit text in separate text editor.
	// - Audio and video playback, with shuffle, loop, skip audio +/- 10 or 30 sec via keyboard.
	//	 - Preview other files (e.g., lyrics or cover art) in same directory while playing audio.
	//	 - User setting to autoload cover art (if any images in directory, load "cover.ext" or first image found)
	//	 - Grid views for images and fonts.
	// - Playlists and filelists.
	//	 - Open standard .m3u media files; save .m3u file of all media items in current directory.
	//	 - Open and save custom .m3u files that may contain directories and _any_ file type.
	//	 - Click file or audio title to display .m3u listing for that item.
	// - User settings (see $settings in code; some settings can be changed via the main menu in the UI and will be remembered in URL query):
	//	 - Light or Dark theme.
	//	 - Bookmarks for local or remote directories.
	//	 - Default image grid size.
	//	 - Default UI font size and font-family.
	//	 - Default UI font and font-size.
	//	 - Default file sorting.
	//	 - Sort with directories on top.
	//	 - Treat apps as directories (MacOS and *nix only)
	//	 - Show or hide invisible files.
	//	 - Show or hide ignored files in the ignored files list (see $row_settings in code below $settings).
	//	 - Show or hide file details.
	//	 - Use custom file icons or browser defaults.
	//	 - Autoload index.ext files.
	//	 - Autoload cover art in directories with audio files.
	//	 - Text editing default view: split, source, or preview.
	//	 - Text editing sync scroll: on or off.

	// CHANGELOG:

	// VERSION 6.0.0b: SUBDIRECTORIES! (You can thank me <a href="https://paypal.me/mschrauzer">here</a>.) Media additions and improvements: durations, playlists, cue sheets, and more.
	// **NOTE:** Some internal prefs and settings have been changed. If you find that previously open index pages don't load correctly after updating, try clicking "Default User Settings" in the main menu, or deleting the query string from the page url.
	// **NEW:** Now you can browse subdirectories in the sidebar and the content pane! Click the directory icon to show the subdirectory's contents; click again to close it. You can also use Cmd/Ctrl-Right Arrow to open it and Cmd/Ctrl-Left Arrow to close it. If this doesn't convince you to send me some <a href="https://paypal.me/mschrauzer">love</a>, I don't know what will.
	//    - For now, sorting of subdirectories is not supported; clicking a new sort will close all open subdirectories.
	// **NEW:** Display length/duration of media tracks(!); allow sorting by track duration. (Not supported in subdirectories.)
	// **NEW:** Basic support for .cue sheet files.
	//    - When a media file (audio or video) is loaded from the sidebar, the script will look for a .cue file in the same directory with _EXACTLY_ the same name as the media file.
	//    - If it finds one, it will load the Track ID, the PERFORMER, the TITLE, and the INDEX (time position) from the cuesheet into a menu next to the audio player or in the title bar for videos; there is no support for other cue sheet commands.
	//    - Selecting one of the tracks will jump media playback to that time.
	//    - Note: .cue files can be selected independently in the sidebar and edited and saved (locally), or created in the Text Editor.
	//    - This may be handy for creating a bookmark for a long media track when a .cue file is not available (for example, for an audiobook downloaded from YouTube).
	//    - Note (MacOS): If you prefer not to clutter the sidebar with .cue files, you can make them invisible by adding a dot to beginning of the file name; the script will still find them.
	// **IMPROVED:** Playlist files: Although <code>.m3u</code> files are just plain text, the browser interprets them as binary and will not open them; this is why the script has the "Open Playlist" menu item.
	//    However, if you change the playlist extension to <code>.txt</code>, the script will be able to read the file as editable text as usual.
	//    What's new is that if you select such a renamed playlist in the sidebar and then double-click it or type <code>Cmd/Ctr + Down Arrow</code> or <code>Cmd/Ctr + Return</code>, the script will load the playlist in the sidebar.
	//    NOTE: The renamed .m3u file must be in EXTM3U format for this work.
	// **CHANGED:** Reorganized main menu to make it more compact.
	// **ADDED:** "Close Playlist" menu item and button which are visible when a playlist/filelist is open.
	// **FIXED:** <code>Cmd+W</code> did not close playlists.
	// **ADDED:** Option to allow playback of all media files( i.e., audio and video), not just the currently selected media type.
	// **ADDED:** Loop and shuffle playback options for video files.
	// **FIXED:** Loop audio playback was broken.
	// **ADDED:** New menu item: "Media Files", with options to "Play All Media Files," "Loop Media", and "Shuffle Media"; the latter two are useful when viewing video files.
	// **FIXED:** Media tracks should scroll into view when track ends and next track begins playback.
	// **FIXED:** Playlists: caps in file extensions caused incorrect file type detection.
	// **FIXED:** Various issues with closing previewed content.
	// **FIXED:** Setting text editing options was broken.
	// **FIXED:** Handling of HTTP error pages wasn't working. Oh, the irony.
	// **FIXED:** "View Sidebar Directory Source" wasn't working.
	// **FIXED:** Some issues with autoloading files from file (i.e., not directory) URLs.
	// **CHANGED:** Audio player now displayed at top of content pane, so that the content title is visually connected to the displayed content.
	// **CHANGED:** Added <code>.m3u</code> files to the list of ignored formats.
	// **CHANGED:** Disabled media checkboxes in Firefox, because Firefox s*cks.
	// **UPDATED** Help menu with additional information.
	// **IMPROVED:** If you navigate up to a parent directory that contains audio, images, and directories, and if autoloadmedia === true, and if the script's navigation history includes the parent directory, the parent directory will be selected in the sidebar for navigation, while the audio and image file will be loaded and highlighted in the sidebar.
	// **IMPROVED:** .webloc and .url files can be opened from preview pane.
	// **IMPROVED:** Hovering specific items in the stats will scroll the first instance of that kind in the sidebar into view. Also limited max-height of stats and allowed scrolling.
	// **OTHER:** Completely reworked the code for getting directory stats.
	// **OTHER:** A few UI refinements.
	// **OTHER:** More performance improvements: Removed a bunch of redundant code and function calls, reduced initial DOM manipulations, converted many strings to template literals for more efficient parsing and concatenation.

	// **KNOWN ISSUES:**
	//    **Chrome:** Smooth scroll (for scrollIntoView() ) seems to be broken in the latest releases.
	//    **Firefox:** Clicking media checkbox es (to toggle selection) causes page reload.
	//    **Firefox:** Tabbing into previewed directories in content pane doesn't work; click in content pane instead in order to use arrow navigation.

	// ************ J + M + J ************* //

	// ************************************ //
	// DON'T EDIT ANYTHING BELOW THIS LINE. //
	// ************************************ //

	// If window.location points to a file, change window location to file container dir, add search_param of file name; then load file container directory and load file in content pane.
	function loadFileURL() {
		let search_params = getSearchParams();
			search_params.set( 'file', window.location.pathname.split('/').reverse()[0] );
		window.location = window.location.pathname.slice( 0,window.location.pathname.lastIndexOf('/') ) +'/?'+ search_params ;
		return;
	}
	if ( !window.location.pathname.endsWith('/') && window.top === window.self ) { loadFileURL(); } // load file urls

	// ***** GENERAL SETUP ***** //
	function getBrowser() {
		switch(true) {
			case navigator.userAgent.search('Chrome') >= 0:		return 'is_chrome';
			case navigator.userAgent.search('Firefox') >= 0:	return 'is_gecko';
			case navigator.userAgent.search('MSIE') >= 0:		return 'is_explorer';
			case navigator.userAgent.search('Opera') >= 0:		return 'is_opera';
			case navigator.userAgent.search('Safari') >= 0 && navigator.userAgent.search('Chrome') < 0: return 'is_safari';
		}
	}
	function getOS() { // modded from https://stackoverflow.com/questions/38241480/detect-macos-ios-windows-android-and-linux-os-with-js
		var platform = window.navigator.platform, macos_platforms = ['Macintosh', 'MacIntel', 'MacPPC', 'Mac68K'], windows_platforms = ['Win32', 'Win64', 'Windows', 'WinCE'], os = null;
		switch(true) {
			case macos_platforms.indexOf(platform) !== -1:		os = 'macos';	break;
			case windows_platforms.indexOf(platform) !== -1:	os = 'windows';	break;
			case !os && /Linux/.test(platform):					os = 'linux';	break;
		}
	  return os;
	}
	// PATHS
	const newURL = function(link) {
		try { return new URL(link,document.baseURI); }
		catch(error) { return; } //console.log('This link is invalid. Please check the file.'); }
	};
	function decodeURIComponentSafe(str) { // Fix "%" error in file name; see https://stackoverflow.com/questions/7449588/why-does-decodeuricomponent-lock-up-my-browser
		if ( !str ) { return str; }
		try {
			return decodeURIComponent(str.replace(/%(?![0-9a-fA-F]{2})/g,'%25') ); // replace % with %25 if not followed by two a-f/number
		} catch(e) {
			return str;
		}
	}
	const $protocol = window.location.protocol;
	const $origin = $protocol +'//'+ window.location.host;
	  let current_location = decodeURIComponentSafe( [location.protocol, '//', location.host, location.pathname].join('') );
	const current_dir_path = current_location.replace(/([/|_|—])/g,'$1<wbr>').replace(/\\/g,'/'); // URL w/o query string for display
	const current_dir = current_location.split('/').slice(-2,-1).toString();

	function escapeStr(str) { str = str.replace(/([$?*+()[]|^])/g,'\\$1'); return str; }
	// QUERY PREFS
	function getSearchParams() { return new URL(window.location).searchParams; }
	// set query key/value
	function setSearchParam(key, value) { let search_params = getSearchParams(); search_params.set( key, value ); updateSearchParams(search_params); }
	// get query value
	function getSearchParam(key) {
		let search_params = getSearchParams(), value = '';
		switch(true) {
			case key === 'width': // set the stored sidebar width or use 30%
				value = ( !search_params.has(key) || window.innerWidth === 0 ? 30 : Math.round(100 * Number.parseInt(search_params.get('width'))/window.innerWidth) ); // percentage
				break;
			default: // if the query_string has a key/value pair, use it, otherwise use the key/value pair from the $settings
				value = ( search_params.has(key) ? search_params.get(key) : $settings[key] !== undefined ? $settings[key].toString() : '' );
				value = value.replace('%2F','').replace('/',''); // some servers add a '/' to end of query string
		}
		return value;
	}
	// toggle query key
	function toggleSearchParam(key) {
	console.log(key);
		let search_params = getSearchParams();
		let non_bool_prefs = { // 'body_class,data-ui_pref': {'pref_name':'value'}
			'theme_light':			{'theme':'light'},
			'theme_dark':			{'theme':'dark'},
			'editor_theme_light': 	{'editor_theme':'light'},
			'editor_theme_dark':	{'editor_theme':'dark'},
			'editor_theme':			{'editor_theme':getSearchParam('theme')},
			'editor_theme_default':	{'editor_theme':getSearchParam('theme')},
			'source_text':			{'default_text_view':'preview_text'},
			'preview_text':			{'default_text_view':'source_text'},
			'preview_html':			{'default_text_view':'preview_html'},
			'sort_by_default':		{'sort_by':'default'},
			'sort_by_name':			{'sort_by':'name'},
			'sort_by_size':			{'sort_by':'size'},
			'sort_by_date':			{'sort_by':'date'},
			'sort_by_kind':			{'sort_by':'kind'},
			'sort_by_ext':			{'sort_by':'ext'},
			'sort_direction_down':	{'sort_direction':'down'},
			'sort_direction_up':	{'sort_direction':'up'},
		};
		var value, param_value, settings_value;
		switch(true) {
			case non_bool_prefs[key] !== undefined:
				value = Object.values( non_bool_prefs[key] ).toString(); // get the value for the key
				key = Object.keys(non_bool_prefs[key]).toString(); // must come after value: i.e., don't redefine key before getting value
				search_params.set( key, value ); // if the setting[key] = value, delete it from search_params; else set query_pref
				break;
			default: // boolean prefs
				settings_value = $settings[key]; // get the default pref value from $settings
				param_value = search_params.get(key); // see if pref is set in query prefs
				key = key.replace('toggle_','');
				value = ( param_value === null ? settings_value.toString() : param_value.toString() ); // if pref is not set in queries, use the default value; else use the query value
				value = ( value === 'true' ? 'false' : 'true' ); // toggle value
				if ( ( param_value !== null && param_value !== settings_value ) ) {
					search_params.delete( key );
				} else {
					search_params.set( key, value );
				}
		}
		updateSearchParams(search_params);
	}
	// remove search param by key
	function removeSearchParam(key) { let search_params = getSearchParams(); search_params.delete(key); updateSearchParams(search_params); }
	// update search params
	function updateSearchParams(search_params) {
		let search_params_str = search_params.toString().replace('%2F','').replace('/','');
		let new_location = ( search_params_str.length === 0 ? window.location.pathname : window.location.pathname +'?'+ search_params_str ); // don't add ? if no search params
		if ( search_params_str.length > -1 ) { window.history.replaceState({}, document.title, new_location); }
		updateParentLinks();
	}

	// ***** SET UP UI ELEMENTS ***** //
	// Parent and Parents Menus
	// UTILITIES
	function updateParentSearchParams(str) { // decrement selected and history values
		let query_str = new URLSearchParams(str); // make new search params from window.location.search
		let history = ( query_str.has('history') ? query_str.get('history') : undefined );
		if ( history !== undefined ) {
			history = history.split(' ');
			switch(true) {
				case history.length > 1: query_str.set('selected',history[0]); history.shift(); query_str.set('history',history.join('+')); break;
				case history.length === 1: query_str.set('selected',history[0]); history.shift(); query_str.delete('history'); break;
			}
		} else {
			query_str.delete('selected');
		}
		str = decodeURIComponentSafe(query_str.toString());
		return str;
	}
	function updateParentLinks() { $('#parents_dir_nav').siblings('ul').empty().append( createParentLinkItems()[0] ); }
	// create links
	function createParentLinks() {
		let link, links = [], query_str = window.location.search.toString().slice(1);
		let link_pieces = current_location.split('/'); // make array of parent directories
			link_pieces = link_pieces.slice(2,-2); // remove beginning and ending empty elements and current directory
		while ( link_pieces.length > 0 ) { // while there are link pieces...
			query_str = updateParentSearchParams(query_str); // update selected and history
			link = $protocol +'//'+ link_pieces.join('/') + '/?' + query_str; // assemble link
			links.push(link); // add to link array
			link_pieces.pop(); // remove last link piece and repeat...
		}
		return links;
	}
	// create menu items
	function createParentLinkItems() {
		let parent_link_menu_items = [], links = createParentLinks();
		$('#parent_dir_nav').find('a').attr( 'href', links[0] ); // set parent link
		for ( let i = 0; i < links.length; i++ ) {
			let display_name = links[i].split('/?')[0];
				display_name = display_name.replace(/\//g,'\/<wbr>');
			let menu_item = `<li><a href="${ links[i] }" class="text_color_111">${ display_name }/</a></li>`;
			parent_link_menu_items.push(menu_item);
		}
		return [parent_link_menu_items.join(''),(window.location.pathname === '/' ? window.location.href : links[0] )]; // return parents link items
	}
	// MENUS: User bookmarks
	function bookmarksMenuItems() {
		const bookmarks = $settings.bookmarks;
		  let menu_items = [], links_arr = [], links_arr_str = '', links;
		if ( bookmarks.length > 0 ) {
			for ( let i = 0; i < bookmarks.length; i+=1 ) {
				links = bookmarks[i].links;
				// make array of links
				for ( let j = 0; j < links.length; j+=1 ) {
					if ( !links[j].link.endsWith('/') ) {
						links[j].link = links[j].link.slice(0,links[j].link.lastIndexOf('/') + 1) + '?file=' + links[j].link.slice(links[j].link.lastIndexOf('/') + 1) ;
					}
					links[j].link_name = links[j].link_name.split('/').join('/<wbr>');
					links_arr[j] = `<li><a class="menu_item has_icon_before text_color_111" href="${ links[j].link }">${ links[j].link_name }</a></li>`;
				}
				links_arr_str = links_arr.join('');
				menu_items[i] = `	<li class="bookmark has_submenu"><a class="menu_item text_color_111">${ bookmarks[i].menu_title }</a>
										<ul class="submenu background_color_D0_50 border_all">${ links_arr_str }</ul>
									</li>`;
			}
			menu_items = menu_items.join('');
		}
		return menu_items;
	}
	// MENUS: Other menu items
	// #menu li a::before, .toggle_UI_pref, a, a:, div, li, span, span::before, span::after, #dir_list a.icon span, #warnings h3::before, #content_audio_title td:before
	const sidebar_menu_items = `
		<li id="sort_by" class="has_submenu border_top border_bottom"><span class="menu_item">Sort by&hellip;</span>     <ul id="sort_menu" class="submenu background_color_D0_50 border_all text_color_111">     <li id="name" class="toggle_UI_pref sorting" data-ui_pref="sort_by_name"><span class="menu_item">Name</span></li>     <li id="time" class="toggle_UI_pref sorting" data-ui_pref="sort_by_time"><span class="menu_item">Time (Media Duration)</span></li>     <li id="size" class="toggle_UI_pref sorting" data-ui_pref="sort_by_size"><span class="menu_item">Size</span></li>     <li id="date" class="toggle_UI_pref sorting" data-ui_pref="sort_by_date"><span class="menu_item">Date</span></li>     <li id="kind" class="toggle_UI_pref sorting" data-ui_pref="sort_by_kind"><span class="menu_item">Kind</span></li>     <li id="ext" class="toggle_UI_pref sorting" data-ui_pref="sort_by_ext"><span class="menu_item">Extension</span></li>     <li id="default" class="toggle_UI_pref sorting" data-ui_pref="sort_by_default"><span class="menu_item">Default</span></li>     </ul></li>
		<li id="theme_container" title="Set the main UI theme (light or dark)."><span id="theme" class="toggle_UI_pref menu_item" data-ui_pref="theme"><span> Theme</span></span></li>
		<li id="alternate_background" class="toggle_UI_pref" data-ui_pref="alternate_background" title="Alternate backgrounds of directory items."><span class="menu_item">Alternate Backgrounds</span></li>
		<li id="show_numbers" class="toggle_UI_pref border_bottom" data-ui_pref="show_numbers" title="Number directory list items."><span class="menu_item">Show Numbers</span></li>
		<li id="ignored_files" class="has_submenu border_bottom"><span class="menu_item">Ignored Items</span>     <ul id="" class="submenu background_color_D0_50 border_all">     <li id="hide_ignored_items" class="toggle_UI_pref border_bottom" data-ui_pref="hide_ignored_items" title="Show/hide ignored items (from the list of ignored file types in the user settings)."><span class="menu_item">Hide Ignored Items</span></li>     <li id="ignore_ignored_items" class="toggle_UI_pref " data-ui_pref="ignore_ignored_items" title="If checked, the browser will not attempt to load ignored items (from the list of ignored file types in the user settings). It is recommended to leave this checked."><span class="menu_item">Ignore Ignored Items</span></li>     </ul></li>
		<li id="autoload_files" class="has_submenu border_bottom"><span class="menu_item">Autoload Files</span>     <ul id="autoload_files_menu" class="submenu background_color_D0_50 border_all">     <li id="autoload_media" class="toggle_UI_pref border_bottom" data-ui_pref="autoload_media" title="Automatically select and load the first media item in a directory and cover art (if any)."><span id="autoload_media_menu" class="menu_item">Autoload Media</span></li>     <li id="autoload_index_files" class="toggle_UI_pref " data-ui_pref="autoload_index_files" title="Automatically load html index file."><span id="autoload_index_files_menu" class="menu_item">Autoload Index Files</span></li></ul>
		<li id="media_files" class="has_submenu border_bottom"><span class="menu_item">Media Files</span>     <ul id="media_files_menu" class="submenu background_color_D0_50 border_all">     <li id="play_all_media" class="toggle_UI_pref border_bottom" data-ui_pref="play_all_media" title="Allow continuous playback of all media types, not just the selected media file type."><span class="menu_item">Play All Media Files</span></li>     <li id="loop_media_files" class="" title="Loop playback for media files"><span id="loop_media_menu" class="menu_item">Loop Media Playback</span></li>     <li id="shuffle_media_files" class="" title="Shuffle media files."><span id="shuffle_media_menu" class="menu_item">Shuffle Media Playback</span></li></ul>
		<li id="playlist_options" class="has_submenu border_bottom"><span class="menu_item">Playlists</span>     <ul id="playlist_menu" class="submenu background_color_D0_50 border_all">		<li><label id="open_playlist_label" class="menu_item border_bottom" for="open_playlist" title="Open local .m3u playlist/filelist file.">Open Playlist/Filelist&hellip;</label><input type="file" id="open_playlist" name="open_playlist" accept=".m3u,.m3u8"></input></li>    <li id="close_playlist_container"><span id="close_playlist" class="menu_item text_color_111" href="#">Close Playlist/Filelist</span></li>     <li class=""><span id="make_playlist" class="menu_item text_color_111" href="#" title="Make an .m3u playlist/filelist of the items in the current directory (if any).">Make Playlist/Filelist&hellip;</span></li>     </ul></li>
		<li class="" title="Enable/disable editing of plain text files. Does not effect main text editor."><span id="enable_text_editing" class="toggle_UI_pref menu_item" data-ui_pref="enable_text_editing"><span id="disable">Text Editing </span></span></li>
		<li id="text_editing" class="has_submenu border_bottom"><span class="menu_item">Text Editing Options</span>     <ul id="text_editing_menu" class="submenu background_color_D0_50 border_all">     <li id="text_editor_menu_item" class="border_bottom" title="Toggle the main text editor."><span id="text_editor" class="menu_item">Toggle Text Editor </span></li>     <li id="toggle_editor_theme_default" title="Editor theme same as the main UI theme."><span id="editor_theme_default" class="toggle_UI_pref menu_item" data-ui_pref="editor_theme_default">Default Text Editor Theme</span></li>     <li id="toggle_editor_theme_light" title="Light text editor theme."><span id="editor_theme_light" class="toggle_UI_pref menu_item" data-ui_pref="toggle_editor_theme_light" title="Light text editor theme."><span id="editor_theme_light">Light Text Editor Theme</span></li>     <li id="toggle_editor_theme_dark" class="border_bottom" title="Dark text editor theme."><span id="editor_theme_dark" class="toggle_UI_pref menu_item" data-ui_pref="toggle_editor_theme_dark" class="border_bottom" title="Dark text editor theme."><span id="editor_theme_dark">Dark Text Editor Theme</span></li>     <li id="split_view" class="toggle_UI_pref border_bottom" data-ui_pref="split_view" title="Toggle display of default text view and both source and rendered text."><span class="menu_item">Split View</span></li>     <li id="source_text" class="toggle_UI_pref menu_item" data-ui_pref="source_text">View Source Markdown/Text</li>     <li id="preview_text" class="toggle_UI_pref menu_item" data-ui_pref="preview_text">View Styled Markdown/Text</li>     <li id="preview_html" class="toggle_UI_pref menu_item" data-ui_pref="preview_html">View Rendered HTML</li></ul>
		<li class="border_bottom"><label id="open_font_label" class="menu_item" for="open_font" title="Open font file (.oft, .ttf, .woff) to view glyph repertoire and font info; save individual glyphs as .svg.">Open Font File&hellip;</label><input type="file" id="open_font" name="open_font" accept=".otf,.ttf,.woff"></input></li>
		<li id="user_settings" class="has_submenu border_bottom"><span class="menu_item">User Settings</span>     <ul id="user_settings_menu" class="submenu background_color_D0_50 border_all">     <li><span id="default_settings" class="menu_item text_color_111 border_bottom" href="#" title="Delete UI prefs stored in the URL query string and reload page.">Reset User Settings</span></li>     <li class=""><span id="export_settings" class="menu_item text_color_111" href="#" title="Export hard-coded user settings and bookmarks to text file.">Export User Settings</span></li>     </ul></li>
		<li id="about"><a class="menu_item text_color_111" href="https://openuserjs.org/scripts/gaspar_schot/Supercharged_Local_Directory_File_Browser" target="_blank">About</a></li>
		<li id="show_help"><span class="menu_item text_color_111">Help</span></li>
		<li id="contact"><a class="menu_item text_color_111" href="mailto:mshroud@vivaldi.net">Contact</a></li>
		<li id="donate"><a class="menu_item text_color_111" href="https://paypal.me/mschrauzer" target="_blank" rel="noopener">Donate</a></li>
	`;
	const SidebarHeaderEls = function() {
		let checked = '', parent_links = createParentLinkItems();
		if ( getSearchParam('show_invisibles') === 'true' ) { checked = 'checked'; }
		return `<section id="sidebar_header" class="text_color_111">
					<div id="sidebar_title" class="border_bottom background_color_B0_30"><div></div></div>
						<div id="sidebar_header_body" class="border_bottom">
							<div id="sidebar_menus" class="background_color_B0_30 border_bottom">
								<div id="parent_dir_menu">     <nav id="parent_dir_nav" class="invert"><a class="menu_item" href="${ parent_links[1] }" title="Parent Directory"></a></nav>     </div>
								<div id="parents_dir_menu">     <nav id="parents_dir_nav" class="border_right border_left">     <div id="current_dir_path" title="Parent Directories"><span class="has_icon_before">${ current_dir_path }</span></div>     <div id="close_playlist_btn_container" class="border_left" title="Close Playlist">     <div id="close_playlist_btn" class="has_background invert"></div>     </div>     </nav>     <ul id="parents_links" class="menu background_color_D0_50 border_bottom">${ parent_links[0] }</ul>     </div>
								<div id="menu_container" title="Main menu">     <nav id="menu_nav" class="invert"><div>&nbsp;</div></nav>     <ul id="menu" class="menu background_color_D0_50 border_bottom">     ${ bookmarksMenuItems() }     ${ sidebar_menu_items }     </ul>     </div>
							</div>
							<div id="sidebar_buttons" class="background_color_C0_40 border_bottom">
								<div id="sidebar_buttons_left" colspan="3">     <button id="show_details" class="toggle_UI_pref" data-ui_pref="show_details" tabindex="-1" title="Toggle display of directory item detail information"><span id="show"> details</span></button>     <label id="show_invisibles_container"><input class="toggle_UI_pref" type="checkbox" id="show_invisibles" data-ui_pref="show_invisibles" for="inv_checkbox" name="inv_checkbox" tabindex="-1"${ checked } /><span class="text_color_111">Show Invisibles</span></label>     </div>
								<div id="grid_btn" class="has_background" tabindex="-1" title="Show Grid">     <ul class="menu has_popout_menu">     <li id="show_image_grid" class="border_right border_bottom">Show Image Grid</li>     <li id="show_font_grid" class="border_right">Show Font Grid</li>     </ul>     </div>
							</div>
							<div id="sorting" class="background_color_C0_40">
								<div id="sorting_row_1" class="container">     <div id="sort_by_name" class="toggle_UI_pref name sorting" data-ui_pref="sort_by_name" title="Sort by name" colspan="2"><span><input id="play_toggle" type="checkbox" tabindex="-1" checked="true" />Name</span></div>     <div id="sort_by_default" class="toggle_UI_pref sorting" data-ui_pref="sort_by_default" title="Default sort" colspan="2"><span>Default</span></div>     <div id="sort_by_time" class="toggle_UI_pref sorting" data-ui_pref="sort_by_time" title="Sort by media duration" colspan="2"><span>Time</span></div>     </div>
								<div id="sorting_row_2">     <div id="sort_by_size" class="toggle_UI_pref details sorting" data-ui_pref="sort_by_size" title="Sort by size"><span>Size</span></div>     <div id="sort_by_date" class="toggle_UI_pref details sorting" data-ui_pref="sort_by_date" title="Sort by size"><span>Date</span></div>     <div id="sort_by_kind" class="toggle_UI_pref details sorting" data-ui_pref="sort_by_kind" title="Sort by kind"><span>Kind</span></div>     <div id="sort_by_ext" class="toggle_UI_pref details sorting" data-ui_pref="sort_by_ext" title="Sort by extension"><span>Ext</span></div>     </div>
							</div>
							<div id="text_editor_row" class="border_top background_color_C0_40"><a href="#" class="text_color_111" title="Toggle Text Editor">Text Editor</a></div>
						</div>
					</section>`;
	};
	// Sidebar Footer (Stats)
	const sidebar_footer_els = `
		<section id="tfoot" class="background_color_D0_50 border_top">     <div id="footer_links" class="has_background invert">&nbsp;     <ul class="has_popout_menu invert">     <li id="open_in_content_pane" class="border_bottom text_color_111">Open Sidebar in Content Pane</li>     <li id="view_directory_source" class="text_color_111" data-kind="view_directory_source">View Sidebar Directory Source</li>     </ul>     </div>     </section>
	`;
	// Dir List Elements
	const sidebar_dir_list_els = `<section id="dir_list_wrapper" class="border_bottom"><table id="dir_list">	<tbody id="tbody" class="background_color_DD_44 text_color_111" tabindex="0"></tbody>	</table></section>`;
	// CONTENT PANE ELEMENTS
	// Content Audio Els
	const content_audio_els = `
		<div id="content_audio_title" class="background_color_C0_40" title="Click to toggle .m3u playlist entry."><span></span></div>
		<div id="content_audio" class="border_bottom background_color_C0_40">
			<div id="audio_container" class="border_all">
				<nav id="cue_sheet_track_list_container_audio" class="cue_sheet_track_list_container border_right"></nav>
				<div id="prev_track" class="prev_next_track_btn audio_controls" title="Previous track">&nbsp;</div>
				<div id="next_track" class="prev_next_track_btn audio_controls border_right" title="Next track">&nbsp;</div>
				<audio id="audio" preload="auto" tabindex="0" controls controlsList="nofullscreen" >Sorry, your browser does not support HTML5 audio.</audio>
				<div id="close_audio" class="audio_controls border_left" title="Close audio"></div>
			</div>
			<div id="audio_options">
				<label id="loop_label"><input type="checkbox" id="loop" for="loop" name="loop" tabindex="0" />Loop</label>
				<label id="shuffle_label"><input type="checkbox" id="shuffle" for="shuffle" name="shuffle" tabindex="0" />Shuffle</label>
			</div>
		</div>
		<div id="content_audio_playlist" class="playlist_entry_container border_bottom"><textarea id="content_audio_playlist_textarea" rows="3" spellcheck="false" /></div>
	`;
	const content_font_viewer = '<div id="font_viewer"><div id="glyphs_container"></div></div>';
	// Content Font Els
	const ContentFontEls = function() {
		const sample_string =	`ABCDEFGHIJKLMNOPQRSTUVWXYZ<br />abcdefghijklmnopqrstuvwxyz<br />0123456789 [(!@#$%^&*;:)]`;
		const lorem_string = `Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.`;
		return `<div id="font_specimen">
					<div id="specimen" class="specimen border_bottom_x" contenteditable="true" tabindex="0">${ sample_string }</div>
					<div id="specimen_string_2" class="hamburger border_bottom_x" contenteditable="true" tabindex="0"><h1 id="specimen_2">Typography</h1><h4 id="specimen_2H4">The art of using types to produce impressions on paper, vellum, &amp;c.</h4></div>
					<div id="specimen_string_3" class="hamburger border_bottom_x" contenteditable="true"><h2 id="specimen_3">S P E C I M E N</h2><h3 id="specimen_3H3">Typography is the work of typesetters (also known as compositors), typographers, graphic designers, art directors, manga artists, comic book artists, graffiti artists, and, now, anyone who arranges words, letters, numbers, and symbols for publication, display, or distribution.</h3></div>
					<div id="lorem_strings" contenteditable="true" tabindex="0">     <div id="lorem" class="lorem">${ lorem_string }</div><div id="lorem_2" class="lorem">${ lorem_string }</div><div id="lorem_3" class="lorem">${ lorem_string }</div></div>
				</div>
				${ content_font_viewer }
				<div id="glyph_viewer" class="background_color_11_FF invert"><div id="glyph_viewer_info" class="background_color_D0_50 border_bottom_x invert"><button id="save_svg_hidden">Save SVG</button><div></div><button id="save_svg">Save SVG</button></div></div>
		`;
	};
	// Font Viewer
	// Iframe Dir Elements
	const ContentIframeDirEls = function(parentLink) {
		return `<header id="thead">
					<div id="change_dirs" class="border_bottom background_color_B0_30 text_color_111">     <span id="parent"><a href="${ parentLink }" class="text_color_111" style="padding-left:16px;" title="Go to parent directory">Parent Directory</a></span>     <span id="open_in_sidebar"><a href="" class="text_color_111" style="padding-right:16px;" title="Open this directory in sidebar">Open in Sidebar</a></span>     </div>
					<div id="sorting_row_1" class="border_bottom text_color_111 background_color_C0_40">     <div id="sort_by_name" class="toggle_UI_pref sorting" data-ui_pref="sort_by_name" title="Sort by name"><span>Name</span></div>     <div id="sort_by_default" class="toggle_UI_pref sorting" data-ui_pref="sort_by_default" title="Default sort"><span>Default</span></div>     </div>
					<div id="sorting_row_2" class="border_bottom background_color_C0_40 text_color_111">     <div id="sort_by_ext" class="toggle_UI_pref sorting" data-ui_pref="sort_by_ext" title="Sort by extension"><span>Ext</span></div>     <div id="sort_by_time" class="toggle_UI_pref sorting" data-ui_pref="sort_by_time" title="Sort by duration"><span>Time</span></div>     <div id="sort_by_size" class="toggle_UI_pref sorting" data-ui_pref="sort_by_size" title="Sort by size"><span>Size</span></div>     <div id="sort_by_date" class="toggle_UI_pref sorting" data-ui_pref="sort_by_date" title="Sort by date"><span>Date</span></div>     <div id="sort_by_kind" class="toggle_UI_pref sorting" data-ui_pref="sort_by_kind" title="Sort by kind"><span>Kind</span></div>     </div>
				</header>
				<section id="iframe_dir_list_wrapper" class="background_color_DD_44"><table id="dir_list"><tbody id="tbody" class="border_bottom text_color_111"></tbody></table></section>`;
	};
	const content_header_els = `
		<header id="content_header">
			<div class="text_color_111 background_color_B0_30"><div>
			${ content_audio_els }
			<div id="content_title" class="title border_bottom">
				<div style="display:inline-flex">
					<nav id="cue_sheet_track_list_container_video" class="cue_sheet_track_list_container border_right"></nav>     <div id="title_buttons_left" class="title_left">     <button id="reload_btn" tabindex="-1"><span></span></button>     <button id="prev_next_btns" class="split_btn" tabindex="-1"><span id="prev_btn"><span>&nbsp;</span></span><span id="next_btn"><span>&nbsp;</span></span></button>     </div>
				</div>
				<div id="title" class=""><span></span></div>
				<div id="title_buttons_right" class="title_right">     <button id="close_btn" tabindex="-1"><span></span></button>     <button id="scale" class="split_btn" tabindex="-1"><span id="decrease">&nbsp;</span><span id="increase">&nbsp;</span></button>     </div>
			</div>
			<div id="content_playlist" class="playlist_entry_container border_bottom"><textarea id="content_playlist_textarea" rows="3" spellcheck="false" /></div>
			</div>
		</header>`;
	// CONTENT containers
	const content_els = `
		<div id="content_container" class="background_color_EE_22">     <div id="content_grid" data-kind="grid"></div>     <div id="content_text" class="background_color_DD_33"></div>     <div id="content_font" class="content background_color_FF_11 text_color_111" spellcheck="false" data-kind="font">${ ContentFontEls() }</div>     <div id="content_image_container" class="content background_color_FF_11" data-kind="image"><img id="content_image" tabindex="0"/></div>     <embed id="content_pdf" class="content" name="plugin" tabindex="0" data-kind="pdf"></embed>     <video id="content_video" class="content background_color_FF_11 media" controls data-kind="video">Your browser does not support the video tag.</video>     <iframe id="content_iframe" class="content" name="content_iframe" sandbox="allow-scripts allow-same-origin allow-modals allow-popups" tabindex="0"></iframe>     <iframe id="content_iframe_utility" class="content" name="content_iframe" sandbox="allow-scripts allow-same-origin allow-modals allow-popups" tabindex="0"></iframe>     </div>
	`;
	// UTILITIES Warnings
	const warnings = `
		<div id="warnings_header" class="text_color_111 background_color_D0_50"><h3 id="warning_header"><span>Warning:</span></h3><h3 id="make_playlist_header"><span>Make Playlist/Filelist (.m3u)</span></h3></div>
		<div id="warnings" class="text_color_111 background_color_D0_50">
			<div id="warning_close_font" class="warning">Are you sure you want to close the font preview?</div>
			<div id="warning_unsaved_text" class="warning">You have unsaved changes.</div>
			<div id="warning_clear_text" class="warning">Are you sure you want to clear all your text?</div>
			<div id="warning_local_bookmark" class="warning">Can\'t load local items from non-local pages. <br />&emsp;Please use your browser\'s bookmarks instead or enter the URL manually.</div>
			<div id="warning_local_file" class="warning">Can\'t load local items from non-local pages.</div>
			<div id="warning_close_playlist" class="warning">Are you sure you want to close the playlist?</div>
			<div id="warning_local_playlist" class="warning">This playlist contains local files. <br />&emsp;Please reload this playlist from a local page in order to play them.</div>
			<div id="warning_no_playlist" class="warning">Can’t make playlist: no qualified items found.</div>
			<div id="warning_make_playlist" class="warning">
				<form id="make_playlist_form" action="#"><fieldset>
					<div><input name="make_playlist" type="radio" id="media_files_only" checked><label for="media_files_only">All media files</label></div>
					<div class="indent"><input name="make_playlist" type="radio" id="audio_files_only"><label for="audio_files_only">Audio files only</label></div>
					<div class="indent"><input name="make_playlist" type="radio" id="video_files_only"><label for="video_files_only">Video files only</label></div>
					<div><input name="make_playlist" type="radio" id="all_non_media_files"><label for="all_non_media_files">All non-media items</label></div>
					<div><input name="make_playlist" type="radio" id="all_items"><label for="all_items">All items</label></div>
					<div class="indent"><input name="make_playlist" type="radio" id="directories_only"><label for="directories_only">Directories only</label></div>
					<div class="indent"><input name="make_playlist" type="radio" id="files_only"><label for="files_only">Files only</label></div>
				</fieldset></form>
			</div>
		</div>
		<div id="warning_buttons_container" class="background_color_E0_60">     <div id="warning_buttons">     <button id="warning_btn_dont_save">Don\'t Save</button>     <button id="warning_btn_cancel" >Cancel</button>     <button id="warning_btn_clear">Clear</button>     <button id="warning_btn_save">Save</button>     <button id="warning_btn_ok">OK</button>     </div>     </div>
	`;
	// UTILITIES: Help Elements
	const content_help = `
		<header class="title text_color_111 border_bottom_x background_color_B0_30"><span>HELP</span><button id="close_help" class="focus"><span>Close</span></button></header><section><p style="text-align:center; font-weight:bold;"><a href="https://openuserjs.org/scripts/gaspar_schot/Supercharged_Local_Directory_File_Browser" target="_blank">SCRIPT HOMEPAGE (openuserjs.org)</a></p>
		<table id="content_help" class="background_color_C0_40 text_color_111 border_top_x border_right_x border_left_x"><tbody class=""><tr><td class="kbd_shortcut text_color_111 border_right_x">KEYBOARD SHORTCUTS</td><td class="help_description text_color_111">DESCRIPTION</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&uarr;</kbd> or <kbd class="background_color_E0_60">&darr;</kdb></kbd></td><td class="help_description text_color_111">Select the previous/next sidebar item or previewed directory item.<br />If audio is playing, and the previous/next file is also audio, the file will be highlighted but not loaded in the audio player; press <kbd class="background_color_E0_60">return</kbd> to load it.</td></tr>
		<tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&larr;</kbd> or <kbd class="background_color_E0_60">&rarr;</kbd></kbd></td><td class="help_description text_color_111">Select prev/next item of the same kind as the current selection.<br />If current selection is a media file, select and begin playback of the next media item.</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8984;/Ctrl</kbd> + <kbd class="background_color_E0_60">&uarr;</kbd></kbd></td><td class="help_description text_color_111">Go to parent directory</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8984;/Ctrl</kbd> + <kbd class="background_color_E0_60">&darr;</kbd></kbd></td><td class="help_description text_color_111">Open selected sidebar directory</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8984;/Ctrl</kbd> + <kbd class="background_color_E0_60">&rarr;</kbd></kbd></td><td class="help_description text_color_111">Open selected subdirectory in sidebar.</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8984;/Ctrl</kbd> + <kbd class="background_color_E0_60">&larr;</kbd></kbd></td><td class="help_description text_color_111">Close selected subdirectory in sidebar or jump to parent directory.</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8997;</kbd> + <kbd class="background_color_E0_60">&larr;</kbd> or <kbd class="background_color_E0_60">&#8594;</kbd></kbd></td><td class="help_description text_color_111">Skip audio/video ±10s</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8997;</kbd> + <kbd class="background_color_E0_60">&#8679;</kbd> + <kbd class="background_color_E0_60">&larr;</kbd> or <kbd class="background_color_E0_60">&rarr;</kbd></kbd></td><td class="help_description text_color_111">Skip audio/video ±30s</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">Escape</kbd></td><td class="help_description text_color_111">Close menus and help, unfocus textareas and content pane, etc.</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">Return</kbd></td><td class="help_description text_color_111">Open selected directory, select file, or pause/play media.</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">Space</kbd></td><td class="help_description text_color_111">Pause/Play media files (if media player loaded).</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">Tab</kbd></td><td class="help_description text_color_111">Toggle focus between sidebar and content pane.</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8984;/Ctrl</kbd> + <kbd class="background_color_E0_60">D</kbd></td><td class="help_description text_color_111">Toggle file details (size, date modified, kind) in some index page types.</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8984;/Ctrl</kbd> + <kbd class="background_color_E0_60">E</kbd></td><td class="help_description text_color_111">Toggle main menu.</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8679;</kbd> + <kbd class="background_color_E0_60">&#8984;/Ctrl</kbd> + <kbd class="background_color_E0_60">E</kbd></td><td class="help_description text_color_111">Show text editor.</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8984;/Ctrl</kbd> + <kbd class="background_color_E0_60">G</kbd></td><td class="help_description text_color_111">Show or reload image or font grids.</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8984;/Ctrl</kbd> + <kbd class="background_color_E0_60">I</kbd></td><td class="help_description text_color_111">Toggle invisible files.</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8679;</kbd> + <kbd class="background_color_E0_60">&#8984;/Ctrl</kbd> + <kbd class="background_color_E0_60">O</kbd></td><td class="help_description text_color_111">Open selected sidebar item in new window/tab.</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8984;/Ctrl</kbd> + <kbd class="background_color_E0_60">R</kbd></td><td class="help_description text_color_111">Reload grids and previewed content, reset scaled images/fonts, reset media files to beginning.</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8984;/Ctrl</kbd> + <kbd class="background_color_E0_60">W</kbd></td><td class="help_description text_color_111">Close previewed content (doesn't work in all browsers; use close button instead), or close window if no content is being previewed.</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8984;/Ctrl</kbd> + <kbd class="background_color_E0_60">&#8679;</kbd> + <kbd class="background_color_E0_60"><</kbd> or <kbd class="background_color_E0_60">></kbd></td><td class="help_description text_color_111">Scale preview items and grids.</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8984;/Ctrl</kbd> + <kbd class="background_color_E0_60">\\</kbd></td><td class="help_description text_color_111">Toggle sidebar.</td></tr>     <tr><td class="kbd_shortcut text_color_111 border_right_x"><kbd class="background_color_E0_60">&#8679;</kbd> + <kbd class="background_color_E0_60">&#8984;/Ctrl</kbd> + <kbd class="background_color_E0_60">\\</kbd></td><td class="help_description text_color_111">Toggle text editor split view.</td></tr></tbody></table>
		<div><strong>MAIN MENU ITEMS (Selected)</strong><dl><dt></dt><dd>Selecting many of the these menu items will override the hard-coded default preferences in the script by adding an entry to the query string in the browser window URL.</dd><dd>This makes it more convenient to customize preferences, since defaults changed in the code will be over-written whenever the script is updated.</dd></dl><dl><dt>BOOKMARK MENU</dt><dd>For convenience you can add bookmarks to files or directories to this menu by editing the User Preference in the code.</dd><dd>These items will be over-written when the script is updated, however; to save them, you may wish to "Export User Settings" (see below) before updating the script.</dd><dd>Of course, you may simply use your browser's bookmarks instead.</dd></dl>     <dl><dt>IGNORED ITEMS</dt><dd>Ignored items include files that the browser cannot handle natively, e.g., common Office and graphics files, various binary files, and many others.</dd><dd>Although they are visible in the sidebar by default, and ignored when selected, they can be hidden here.</dd><dd>Also, normal browser behavior for handling such files can be restored by unchecking "Ignore Ignored Files", but it is recommended that this preference be left checked.</dd></dl>
		<dl><dt>OPEN PLAYLIST/FILELIST</dt><dd>The script supports basic .m3u playlists of audio or video files. Click to load a local .m3u file.</dd><dd>The script also has custom support for "filelists," which are standard .m3u files that contain links to directories and <i>any</i> file type supported by the script or browser.</dd><dd>Note: if you change the extension of an ordinary .m3u file to .txt, the script will read it normally as an editable text file.<br />Double-clicking the selected file in the sidebar, or typing <code>Cmd/Ctr + Down Arrow</code> or <code>Cmd/Ctr + Return</code>, will open the playlist/filelist in the sidebar.<br />NOTE: The text must begin with #EXTM3U for this work.</dd></dl>     <dl><dt>SAVE PLAYLIST/FILELIST</dt><dd>Save the files in the current sidebar directory as an .m3u playlist/filelist. Choose audio, video, all media, all non-media, all items, directories or files only.</dd></dl>     <dl><dt>OPEN FONT FILE</dt><dd>Load a local font file and view information about the font and a grid of its complete glyph repertoire.</dd><dd>Glyph grids can be navigated with the arrow keys. Individual glyphs can be selected by clicking them or pressing <kbd>Return</kbd>.</dd><dd>Individual glyphs may be saved as .svg files.</dd></dl>     <dl><dt>DEFAULT USER SETTINGS</dt><dd>This will remove the query string from the browser window URL, so that the default user settings from the code will be used instead.</dd></dl>     <dl><dt>EXPORT USER SETTINGS</dt><dd>Save a file containing the User Settings from the code, including custom bookmarks and other settings.</dd></dl></div>
		<div><strong>OTHER SCRIPT FUNCTIONS</strong><dl><dt>NAVIGATION</dt><dd>Sidebar displays list of items in current directory. Select a sidebar item to show it in the content pane.</dd><dd>Click a directory icon in the sidebar or select it and type Cmd/Ctrl Right Arrow to open subdirectory; click again to close or type Cmd/Ctrl Left Arrow.</dd></dl><dl><dt>IMAGES, FONTS, FONT GLYPHS</dt><dd>Previewed items can be scaled with <kbd>Cmd/Ctr +/&ndash;</kbd> keys.</dd></dl>     <dl><dt>IMAGE AND FONT GRIDS</dt><dd>If a directory contains images and/or font files, the "Show Grid" icon will appear in the sidebar. Click it (or type <kbd>Cmd/Ctr+G</kbd>) to show a grid of the available items.</dd><dd>Grids can be navigated with the arrow keys, and individual grid items may be viewed by clicking them or pressing <kbd>Return</kbd>.</dd><dd>When a grid item is being viewed, the grid can still be navigated with the arrow keys.</dd><dd>Closing a selected grid item will show the grid again.</dd></dl>     <dl><dt>CUE SHEETS</dt><dd>When a media file (audio or video) is loaded, the script will look for a .cue file in the same directory with <i>EXACTLY</i> the same name as the media file.</dd><dd>If it finds one, it will load the Track ID, the PERFORMER, the TITLE, and the INDEX (time position) into a menu next to the audio player; there is no support for other commands.</dd><dd>Tracks can be selected by clicking the item, and played or paused by clicking the selected item.</dd><dd>.cue files can also be selected independently in the sidebar and edited and saved (locally). This may be handy for creating "on the fly" bookmarks for a long media track before closing the page.</dd><dd>Note that you can also create and save (locally) a new .cue file by using the Text Editor.</dd><dd>Note (MacOS): If you prefer not to clutter the sidebar with .cue files, you may make them invisible by adding a dot to beginning of the file name; the script will still find them.</dd></dl>
		</div></section>`;
	// MD Build UI
	const text_editing_UI_els = `
		<table id="toolbar">     <tbody><tr><td>
				<ul id="toolbar_buttons">     <li id="editor_theme" class="toolbar_icon has_background" title="Toggle Editor Theme"></li>     <li id="toggle_source_text" class="toggle_UI_pref toolbar_icon has_background" data-ui_pref="source_text" title="Toggle Source"></li>     <li id="toggle_preview_text" class="toggle_UI_pref toolbar_icon has_background" data-ui_pref="preview_text" title="Toggle Preview"></li>     <li id="toggle_preview_html" class="toggle_UI_pref toolbar_icon has_background" data-ui_pref="preview_html" title="Toggle HTML"></li>     <li id="toggle_split_view" class="toggle_UI_pref toolbar_icon has_background" data-ui_pref="split_view" title="Toggle Split"></li>     <li id="sync_scroll" class="" data-ui_pref="sync_scroll"><input name="sync_scroll" type="checkbox"><label for="sync_scroll">Sync Scroll</label></li>     <li id="save_btn" title=""><ul class="menu has_popout_menu">     <li id="save_text" class="border_right border_bottom" title="Save source text"><span id="save_text_link" target="_blank">Save Source</span></li>     <li id="save_HTML" class="border_right" title="Save rendered html"><span id="save_HTML_link" target="_blank">Save HTML</span></li>     </ul></li>     <li id="clear_text" title="Clear Text">Clear</li>     </ul>
			</td></tr></tbody>     </table>
		<div id="text_container">     <textarea id="text_source" class="background_color_DD_33 text_color_111" tabindex="0"></textarea>     <div id="text_preview" class="background_color_DD_33 text_color_111 markdown-body" tabindex="0"></div>     <div id="html_preview" class="background_color_DD_33 text_color_111" tabindex="0"></div>
		<div id="text_editing_handle"></div></div>
	`;
	// ASSEMBLE SIBEBAR & CONTENT PANE ELEMENTS
	const MainContent = `
		<main id="main_content">
			<section id="sidebar_wrapper" class="border_right" style="width:${ Number(getSearchParam("width")) }%">     ${ SidebarHeaderEls() }     <div id="sidebar" class="background_color_C0_40">${ sidebar_dir_list_els } ${ sidebar_footer_els }</div>     <div id="handle"></div>     <div id="hide_sidebar" class="toggle_UI_pref invert" data-ui_pref="hide_sidebar" title="Toggle Sidebar"></div>     </section>
			<section id="content_pane" style="width:${ ( 100 - Number(getSearchParam("width")) ) }%">${ content_header_els } ${ content_els }</section>
			<section id="utilities">     <div id="warnings_container" class="background_color_E0_60">${ warnings }</div>     <div id="help_container" class="background_color_E0_60">${ content_help }</div>     </section>
		</main>
	`;
	// DEFINE Content Elements
	const $main_content =				$(MainContent);
	const $dir_list_body =				$main_content.find('#tbody');
	const $dir_list =					$main_content.find('#dir_list');
	const $content_pane =				$main_content.find('#content_pane');
	const $audio_player =				$main_content.find('#audio');
	const $content_grid =				$main_content.find('#content_grid');
	const $content_font =				$main_content.find('#content_font');
	const $content_image_container =	$main_content.find('#content_image_container');
	const $content_image =				$content_image_container.find('img');
	const $content_video =				$main_content.find('#content_video');
	const $content_iframe = 			$main_content.find('#content_iframe');

	// SVG UI ICONS
	// auto format dark icon colr
	function SVG_UI_Icon(icon_name) { return `url("data:image/svg+xml;utf8,${ SVG_UI_Icons[icon_name] }")`; } // get svg UI icon by name
	const SVG_UI_Icons = {
		'arrow':				'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23222222\' d=\'M4 4l12 6-12 6z\' /></svg>',
		'arrow_dark':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23DDDDDD\' d=\'M4 4l12 6-12 6z\' /></svg>',
		'bookmark':				'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23222222\' d=\'M2 2c0-1.1.9-2 2-2h12a2 2 0 0 1 2 2v18l-8-4-8 4V2zm2 0v15l6-3 6 3V2H4z\' /></svg>',
		'bookmark_dark':		'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23DDDDDD\' d=\'M2 2c0-1.1.9-2 2-2h12a2 2 0 0 1 2 2v18l-8-4-8 4V2zm2 0v15l6-3 6 3V2H4z\' /></svg>',
		'check_mark':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 12 09\'><g transform=\'matrix(0.55,5.55112e-17,-5.55112e-17,0.55,0.578932,-1.01245)\'><path d=\'M-0.071,10.929L2.5,8.358L7,12.857L17.285,2.572L19.856,5.144L7,18L-0.071,10.929Z\' style=\'fill:rgb(68,68,68);fill-rule:nonzero;\'/></g></svg>',
		'chevron_up':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 12 08\'><g transform=\'matrix(1,0,0,1,-3.843,-5.843)\'><path d=\'M10.707,7.05L10,6.343L4.343,12L5.757,13.414L10,9.172L14.243,13.414L15.657,12L10.707,7.05Z\' style=\'fill:rgb(16,16,16);fill-rule:nonzero;\'/></g></svg>',
		'chevron_right':		'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 08 12\'><g transform=\'matrix(1,0,0,1,-6.086,-4)\'><path d=\'M12.95,10.707L13.657,10L8,4.343L6.586,5.757L10.828,10L6.586,14.243L8,15.657L12.95,10.707Z\' style=\'fill:rgb(16,16,16);fill-rule:nonzero;\'/></g></svg>',
		'chevron_down':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 12 08\'><g transform=\'matrix(1,0,0,1,-4,-6.157)\'><path d=\'M9.293,12.95L10,13.657L15.657,8L14.243,6.586L10,10.828L5.757,6.586L4.343,8L9.293,12.95Z\' style=\'fill:rgb(16,16,16);fill-rule:nonzero;\'/></g></svg>',
		'chevron_left':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 08 12\'><g transform=\'matrix(1,0,0,1,-5.843,-4)\'><path d=\'M7.05,9.293L6.343,10L12,15.657L13.414,14.243L9.172,10L13.414,5.757L12,4.343L7.05,9.293Z\' style=\'fill:rgb(16,16,16);fill-rule:nonzero;\'/></g></svg>',
		'document':				'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23222222\' d=\'M4 18h12V6h-4V2H4v16zm-2 1V0h12l4 4v16H2v-1z\' /></svg>',
		'error':				'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23FFB636\' id=\'Layer_2\' d=\'M1.075,18.05l8.146,-16.683c0.236,-0.484 0.924,-0.491 1.169,-0.011l8.537,16.683c0.223,0.435 -0.093,0.952 -0.582,0.952l-16.683,0c-0.483,0 -0.799,-0.507 -0.587,-0.941Z\' style=\'fill-opacity:0.75;fill-rule:nonzero;\'/><path id=\'Layer_3\' d=\'M11.055,7.131l-0.447,6.003c-0.034,0.45 -0.425,0.787 -0.874,0.753c-0.408,-0.03 -0.724,-0.356 -0.753,-0.753l-0.447,-6.003c-0.052,-0.696 0.47,-1.302 1.167,-1.354c0.696,-0.052 1.302,0.47 1.354,1.166c0.005,0.061 0.004,0.129 0,0.188Zm-1.26,8.037c-0.641,0 -1.159,0.518 -1.159,1.158c0,0.641 0.518,1.159 1.159,1.159c0.64,0 1.158,-0.518 1.158,-1.159c0,-0.64 -0.518,-1.158 -1.158,-1.158Z\' style=\'fill:%23444;fill-opacity:0.75;fill-rule:nonzero;\'/></svg>',
		'folder':				'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23222222\' d=\'M0 4c0-1.1.9-2 2-2h7l2 2h7a2 2 0 0 1 2 2v10a2 2 0 0 1-2 2H2a2 2 0 0 1-2-2V4zm2 2v10h16V6H2z\' /></svg>',
		'grid':					'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23222222\' d=\'M0 0h9v9H0V0zm2 2v5h5V2H2zm-2 9h9v9H0v-9zm2 2v5h5v-5H2zm9-13h9v9h-9V0zm2 2v5h5V2h-5zm-2 9h9v9h-9v-9zm2 2v5h5v-5h-5z\' /></svg>',
		'grid_dark':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23DDDDDD\' d=\'M0 0h9v9H0V0zm2 2v5h5V2H2zm-2 9h9v9H0v-9zm2 2v5h5v-5H2zm9-13h9v9h-9V0zm2 2v5h5V2h-5zm-2 9h9v9h-9v-9zm2 2v5h5v-5h-5z\' /></svg>',
		'grid_loaded':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23118888\' d=\'M0 0h9v9H0V0zm2 2v5h5V2H2zm-2 9h9v9H0v-9zm2 2v5h5v-5H2zm9-13h9v9h-9V0zm2 2v5h5V2h-5zm-2 9h9v9h-9v-9zm2 2v5h5v-5h-5z\' /></svg>',
		'grid_loaded_dark':		'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%2344BBBB\' d=\'M0 0h9v9H0V0zm2 2v5h5V2H2zm-2 9h9v9H0v-9zm2 2v5h5v-5H2zm9-13h9v9h-9V0zm2 2v5h5V2h-5zm-2 9h9v9h-9v-9zm2 2v5h5v-5h-5z\' /></svg>',
		'ignored':				'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23222222\' d=\'M0 10a10 10 0 1 1 20 0 10 10 0 0 1-20 0zm16.32-4.9L5.09 16.31A8 8 0 0 0 16.32 5.09zm-1.41-1.42A8 8 0 0 0 3.68 14.91L14.91 3.68z\' opacity=\'0.25\' /></svg>',
		'ignored_dark':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23BBBBBB\' d=\'M0 10a10 10 0 1 1 20 0 10 10 0 0 1-20 0zm16.32-4.9L5.09 16.31A8 8 0 0 0 16.32 5.09zm-1.41-1.42A8 8 0 0 0 3.68 14.91L14.91 3.68z\' opacity=\'0.25\' /></svg>',
		'menu':					'<svg width=\'100%\' height=\'100%\' viewBox=\'0 0 13 10\' version=\'1.1\' xmlns=\'http://www.w3.org/2000/svg\' xmlns:xlink=\'http://www.w3.org/1999/xlink\' xml:space=\'preserve\' xmlns:serif=\'http://www.serif.com/\' style=\'fill-rule:evenodd;clip-rule:evenodd;stroke-linejoin:round;stroke-miterlimit:2;\'>    <rect x=\'0\' y=\'0\' width=\'13\' height=\'2\' style=\'fill:rgb(34,34,34);\'/><rect x=\'0\' y=\'4\' width=\'13\' height=\'2\' style=\'fill:rgb(34,34,34);\'/><rect x=\'0\' y=\'8\' width=\'13\' height=\'2\' style=\'fill:rgb(34,34,34);\'/></svg>',
		'minus':				'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><rect fill=\'%23222222\' x=\'1\' y=\'8\' width=\'18\' height=\'4\' /></svg>',
		'multiply':				'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23222222\' d=\'M10,7l6,-6l3,3l-6,6l6,6l-3,3l-6,-6l-6,6l-3,-3l6,-6l-6,-6l3,-3l6,6Z\'/></svg>',
		'music':				'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23888888\' d=\'M15.987,13.982c0,0.906 -0.413,1.664 -1.239,2.274c-0.757,0.554 -1.604,0.831 -2.541,0.831c-0.548,0 -0.998,-0.129 -1.348,-0.388c-0.389,-0.295 -0.583,-0.708 -0.583,-1.238c0,-0.838 0.398,-1.574 1.192,-2.209c0.752,-0.597 1.559,-0.896 2.421,-0.896c0.727,0 1.257,0.145 1.59,0.434l0,-9.489l-6.755,1.82l0,10.774c0,0.906 -0.413,1.663 -1.238,2.273c-0.758,0.555 -1.605,0.832 -2.541,0.832c-0.549,0 -0.998,-0.13 -1.35,-0.388c-0.388,-0.296 -0.582,-0.709 -0.582,-1.238c0,-0.838 0.398,-1.574 1.192,-2.209c0.752,-0.597 1.559,-0.896 2.421,-0.896c0.727,0 1.257,0.145 1.589,0.434l0,-11.605l7.772,-2.098l0,12.982Z\' style=\'fill-opacity:0.4;fill-rule:nonzero;\'/></svg>',
		'plus':					'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23222222\' d=\'M8.001,1l3.999,0l0,7l7,0l0,4l-7,0l-0.001,7l-3.999,0l0,-7l-7,0l0,-4l7,0l0.001,-7Z\'/></svg>',
		'prev_next_track':		'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23222222\' d=\'M13,5l2,0l0,10l-2,0l0,-10Zm-8,0l8,5l-8,5l0,-10Z\'/></svg>',
		'prev_next_track_ff':	'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23FFFFFF\' d=\'M12.8,14l-10.8,-7l10.8,-7l0,14Z\'\'/><rect x=\'0\' y=\'0\' width=\'2\' height=\'14\' style=\'fill:%23fff;\'/></svg>',
		'spinner':				'<?xml version=\'1.0\' encoding=\'utf-8\'?><svg xmlns=\'http://www.w3.org/2000/svg\' xmlns:xlink=\'http://www.w3.org/1999/xlink\' style=\'margin: auto; background: none; display: block; shape-rendering: auto;\' width=\'200px\' height=\'200px\' viewBox=\'0 0 100 100\' preserveAspectRatio=\'xMidYMid\'><g transform=\'translate(50 50)\'><g transform=\'rotate(44.0329)\'><animateTransform attributeName=\'transform\' type=\'rotate\' values=\'0;45\' keyTimes=\'0;1\' dur=\'0.25s\' repeatCount=\'indefinite\'/><path d=\'M29.491524206117255 -5.5 L37.491524206117255 -5.5 L37.491524206117255 5.5 L29.491524206117255 5.5 A30 30 0 0 1 24.742744050198738 16.964569457146712 L24.742744050198738 16.964569457146712 L30.399598299691117 22.621423706639092 L22.621423706639096 30.399598299691114 L16.964569457146716 24.742744050198734 A30 30 0 0 1 5.5 29.491524206117255 L5.5 29.491524206117255 L5.5 37.491524206117255 L-5.499999999999997 37.491524206117255 L-5.499999999999997 29.491524206117255 A30 30 0 0 1 -16.964569457146705 24.742744050198738 L-16.964569457146705 24.742744050198738 L-22.621423706639085 30.399598299691117 L-30.399598299691117 22.621423706639092 L-24.742744050198738 16.964569457146712 A30 30 0 0 1 -29.491524206117255 5.500000000000009 L-29.491524206117255 5.500000000000009 L-37.491524206117255 5.50000000000001 L-37.491524206117255 -5.500000000000001 L-29.491524206117255 -5.500000000000002 A30 30 0 0 1 -24.742744050198738 -16.964569457146705 L-24.742744050198738 -16.964569457146705 L-30.399598299691117 -22.621423706639085 L-22.621423706639092 -30.399598299691117 L-16.964569457146712 -24.742744050198738 A30 30 0 0 1 -5.500000000000011 -29.491524206117255 L-5.500000000000011 -29.491524206117255 L-5.500000000000012 -37.491524206117255 L5.499999999999998 -37.491524206117255 L5.5 -29.491524206117255 A30 30 0 0 1 16.964569457146702 -24.74274405019874 L16.964569457146702 -24.74274405019874 L22.62142370663908 -30.39959829969112 L30.399598299691117 -22.6214237066391 L24.742744050198738 -16.964569457146716 A30 30 0 0 1 29.491524206117255 -5.500000000000013 M0 -20A20 20 0 1 0 0 20 A20 20 0 1 0 0 -20\' fill=\'%237c7c7c\'/></g></g></svg>',
		'toggle':				'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 20 20\'><path fill=\'%23222222\' d=\'M10.207,9.293l-0.707,0.707l5.657,5.657l1.414,-1.414l-4.242,-4.243l4.242,-4.243l-1.414,-1.414l-4.95,4.95Z\' /><path fill=\'%23222222\' d=\'M4.207,9.293l-0.707,0.707l5.657,5.657l1.414,-1.414l-4.242,-4.243l4.242,-4.243l-1.414,-1.414l-4.95,4.95Z\'/></svg>',
	};

	function SVG_UI_File_Icon(icon_name) {
		switch(icon_name) {
			case 'favicon': return 'iVBORw0KGgoAAAANSUhEUgAAAIAAAACAAgMAAAC+UIlYAAAACVBMVEUmRcmZzP8zmf8pVcWPAAAAAXRSTlMAQObYZgAAAFBJREFUeF7tyqERwDAMBEE3mX5UiqDmqwwziTPHjG7xrmzrLFtRaApDIRiKQlMYCsFQFJrCUAiGotAU5hTA1WB4fhkMBsOJwWAwgHvB8CHpBcTbpxy4RZNvAAAAAElFTkSuQmCC';
			case 'file_icon_dir_default': return 'url("data:image/png;base64,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 ")';
			case 'file_icon_file_default': return 'url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAIAAACQkWg2AAAABnRSTlMAAAAAAABupgeRAAABHUlEQVR42o2RMW7DIBiF3498iHRJD5JKHurL+CRVBp+i2T16tTynF2gO0KSb5ZrBBl4HHDBuK/WXACH4eO9/CAAAbdvijzLGNE1TVZXfZuHg6XCAQESAZXbOKaXO57eiKG6ft9PrKQIkCQqFoIiQFBGlFIB5nvM8t9aOX2Nd18oDzjnPgCDpn/BH4zh2XZdlWVmWiUK4IgCBoFMUz9eP6zRN75cLgEQhcmTQIbl72O0f9865qLAAsURAAgKBJKEtgLXWvyjLuFsThCSstb8rBCaAQhDYWgIZ7myM+TUBjDHrHlZcbMYYk34cN0YSLcgS+wL0fe9TXDMbY33fR2AYBvyQ8L0Gk8MwREBrTfKe4TpTzwhArXWi8HI84h/1DfwI5mhxJamFAAAAAElFTkSuQmCC ")';
			default: return 'url("data:image/svg+xml;utf8,'+ SVG_UI_File_Icons[icon_name] +'")';
		}
	}
	const SVG_UI_File_Icons = { // n.b.: order is important
		'file_icon_dir':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><path d=\'M6,2.5l-1,-1.5l-5,0l0,12l14,0l0,-10.5l-8,0Z\' style=\'fill:%2339f;fill-rule:nonzero;\'/><rect x=\'1.5\' y=\'4\' width=\'11\' height=\'7.5\' style=\'fill:%239cf;\'/></svg>',
		'file_icon_dir_open':		'<svg viewBox=\'0 0 14 14\' xmlns=\'http://www.w3.org/2000/svg\' fill-rule=\'evenodd\' clip-rule=\'evenodd\' stroke-linejoin=\'round\' stroke-miterlimit=\'2\'><path d=\'M6.1 2.7L4.8 1H0v12h14V2.7H6.1z\' fill=\'%2339f\' fill-rule=\'nonzero\'/><path d=\'M7 6h5.5v5.5h-11L7 6z\' fill=\'%239cf\'/></svg>',
		'file_icon_file':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><g><path d=\'M8.3,0l-6.8,0l0,14l11,0l0,-9.8l-4.2,-4.2Z\' style=\'fill:%23888;fill-rule:nonzero;\'/><path d=\'M11,12.5l-8,0l0,-11l3.8,0l0,4.2l4.2,0l0,6.8Z\' style=\'fill:%23fff;fill-rule:nonzero;\'/><path d=\'M8.3,4.2l1.9,0l-1.9,-2l0,2Z\' style=\'fill:%23fff;fill-rule:nonzero;\'/></g></svg>',
		'file_icon_invisible':		'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><g><path d=\'M8.3,0l-6.8,0l0,14l11,0l0,-9.8l-4.2,-4.2Z\' style=\'fill:%23888;fill-rule:nonzero;\'/><path d=\'M11,12.5l-8,0l0,-11l3.8,0l0,4.2l4.2,0l0,6.8Z\' style=\'fill:%23bbb;fill-rule:nonzero;\'/><path d=\'M8.3,4.2l1.9,0l-1.9,-2l0,2Z\' style=\'fill:%23bbb;fill-rule:nonzero;\'/></g><circle cx=\'7\' cy=\'9\' r=\'1.5\' style=\'fill:%23878787;\'/></svg>',
		'file_icon_ignored':		'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><path d=\'M7,0c-3.9,0 -7,3.1 -7,7c0,3.9 3.1,7 7,7c3.9,0 7,-3.1 7,-7c0,-3.9 -3.1,-7 -7,-7Z\' style=\'fill:%23999;fill-rule:nonzero;\'/><path d=\'M7,2c2.8,0 5,2.2 5,5c0,2.8 -2.2,5 -5,5c-2.8,0 -5,-2.2 -5,-5c0,-2.8 2.2,-5 5,-5\' style=\'fill:%23ddd;fill-rule:nonzero;\'/><path d=\'M10.695,1.774l-8.839,8.839l1.626,1.626l8.839,-8.839l-1.626,-1.626Z\' style=\'fill:%23999;\'/></svg>',
		'file_icon_dirinvisible':	'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><path d=\'M6,2.5l-1,-1.5l-5,0l0,12l14,0l0,-10.5l-8,0Z\' style=\'fill:%23888;fill-rule:nonzero;\'/><rect x=\'1.5\' y=\'4\' width=\'11\' height=\'7.5\' style=\'fill:%23bbb;\'/><circle cx=\'7\' cy=\'7.5\' r=\'1.5\' style=\'fill:%23888;\'/></svg>',
		'file_icon_alias':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><rect x=\'0\' y=\'0\' width=\'14\' height=\'14\' style=\'fill:%23808080;fill-rule:nonzero;\'/><path d=\'M3,12.5c0,-3.863 2.253,-7.5 6.259,-7.5\' style=\'fill:none;stroke:%23fc6;stroke-width:3px;\'/><path d=\'M13,5l-4,-4l0,8l4,-4Z\' style=\'fill:%23fc6;\'/></svg>',
		'file_icon_archive':		'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><path d=\'M11,8.5l0,-1l2,0l0,2l-5,1l-2,0l0,1.5l4,0l0,1l-4,0l0,1l-3,0l0,-1l-2,0l0,-1l2,0l0,-1.5l-2,0l0,-2l2,0l0,-6.5l-2,0l0,-2l7,0l5,1l0,2l-2,0l0,-1l-5,0l0,6.5l5,0Z\' style=\'fill:%23999;\'/></svg>',
		'file_icon_app':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><path id=\'rect6894\' d=\'M6.125,0l-0.292,1.859c-0.587,0.135 -1.146,0.38 -1.64,0.693l0,-0.018l-1.532,-1.094l-1.221,1.221l1.094,1.532l0.018,0c-0.313,0.495 -0.559,1.051 -0.693,1.64l-1.859,0.292l0,1.75l1.859,0.292c0.134,0.589 0.38,1.145 0.693,1.64l-0.018,0l-1.094,1.532l1.221,1.221l1.532,-1.094l0,-0.018c0.494,0.313 1.053,0.558 1.64,0.693l0.292,1.859l1.75,0l0.292,-1.859c0.596,-0.137 1.14,-0.372 1.64,-0.693l1.532,1.112l1.221,-1.221l-1.112,-1.532c0.309,-0.492 0.523,-1.057 0.656,-1.64l1.896,-0.292l0,-1.75l-1.896,-0.292c-0.133,-0.583 -0.347,-1.148 -0.656,-1.64l0.018,0l1.094,-1.532l-1.221,-1.221l-1.532,1.094l0,0.018c-0.5,-0.321 -1.044,-0.556 -1.64,-0.693l-0.292,-1.859l-1.75,0Zm0.875,4.667c1.288,0 2.333,1.036 2.333,2.333c0,1.297 -1.045,2.333 -2.333,2.333c-1.288,0 -2.333,-1.036 -2.333,-2.333c0,-1.297 1.045,-2.333 2.333,-2.333Z\' style=\'fill:%237a7ab8;\'/></svg>',
		'file_icon_audio':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><g id=\'Layer1\'><circle cx=\'7\' cy=\'7\' r=\'7\' style=\'fill:%230f8a8a;\'/></g><path d=\'M11,9.5l0,0c-0.019,0.681 -0.796,1.339 -1.75,1.475c-0.966,0.138 -1.75,-0.31 -1.75,-1c0,-0.69 0.784,-1.362 1.75,-1.5c0.268,-0.038 0.523,-0.031 0.75,0.013l0,-4.488l-4,0l0,6.5l0,0c-0.019,0.681 -0.796,1.339 -1.75,1.475c-0.966,0.138 -1.75,-0.31 -1.75,-1c0,-0.69 0.784,-1.362 1.75,-1.5c0.268,-0.038 0.523,-0.031 0.75,0.013l0,-6.488l6,-1l0,7.5Z\' style=\'fill:%23fff;\'/><path d=\'M11,2l-6,1l0,2l6,-1l0,-2Z\' style=\'fill:%23fff;\'/></svg>',
		'file_icon_code':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><path d=\'M14,0l-14,0l0,14l14,0l0,-14Z\' style=\'fill:%2372d;fill-rule:nonzero;\'/><g><path d=\'M5.923,12.965c-1.049,0 -1.784,-0.161 -2.209,-0.48c-0.425,-0.317 -0.638,-0.82 -0.638,-1.503l0,-2.067c0,-0.446 -0.146,-0.764 -0.438,-0.95c-0.292,-0.188 -0.709,-0.281 -1.256,-0.281l0,-1.368c0.547,0 0.967,-0.094 1.259,-0.28c0.292,-0.186 0.438,-0.5 0.438,-0.938l0,-2.092c0,-0.675 0.217,-1.172 0.65,-1.491c0.432,-0.32 1.164,-0.479 2.195,-0.479l0,1.312c-0.401,0.01 -0.718,0.09 -0.952,0.24c-0.233,0.15 -0.348,0.426 -0.348,0.827l0,1.985c0,0.876 -0.511,1.396 -1.532,1.559l0,0.083c1.021,0.154 1.532,0.67 1.532,1.544l0,1.997c0,0.41 0.116,0.688 0.349,0.835c0.233,0.146 0.55,0.223 0.951,0.232l-0.001,1.315Z\' style=\'fill:%23fff;fill-rule:nonzero;\'/><path d=\'M8.076,12.965l0,-1.313c0.392,-0.009 0.706,-0.089 0.944,-0.239c0.236,-0.15 0.355,-0.426 0.355,-0.829l0,-1.996c0,-0.867 0.511,-1.382 1.531,-1.545l0,-0.084c-1.02,-0.164 -1.53,-0.679 -1.53,-1.546l0,-1.997c0,-0.41 -0.116,-0.688 -0.349,-0.834c-0.232,-0.146 -0.549,-0.224 -0.951,-0.233l0,-1.313c1.049,0 1.785,0.159 2.21,0.479c0.423,0.319 0.637,0.821 0.637,1.505l0,2.065c0,0.447 0.146,0.765 0.438,0.951c0.292,0.187 0.711,0.28 1.257,0.28l0,1.367c-0.546,0.012 -0.967,0.107 -1.259,0.287c-0.293,0.183 -0.438,0.5 -0.438,0.945l0,2.08c0,0.674 -0.217,1.172 -0.65,1.491c-0.432,0.319 -1.165,0.479 -2.195,0.479Z\' style=\'fill:%23fff;fill-rule:nonzero;\'/></g></svg>',
		'file_icon_database':		'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><path d=\'M14,2.5l0,9c0,1.38 -3.137,2.5 -7,2.5c-3.863,0 -7,-1.12 -7,-2.5l0,-9\' style=\'fill:%23808080;\'/><path d=\'M13,2.5l0,9c0,0.828 -2.689,1.5 -6,1.5c-3.311,0 -6,-0.672 -6,-1.5l0,-9\' style=\'fill:%23b4b4b4;\'/><path d=\'M14,8.5c0,1.38 -3.137,2.5 -7,2.5c-3.863,0 -7,-1.12 -7,-2.5\' style=\'fill:%23808080;\'/><path d=\'M13,8.5c0,0.828 -2.689,1.5 -6,1.5c-3.311,0 -6,-0.672 -6,-1.5\' style=\'fill:%23b4b4b4;\'/><path d=\'M14,5.5c0,1.38 -3.137,2.5 -7,2.5c-3.863,0 -7,-1.12 -7,-2.5\' style=\'fill:%23808080;\'/><path d=\'M13,5.5c0,0.828 -2.689,1.5 -6,1.5c-3.311,0 -6,-0.672 -6,-1.5\' style=\'fill:%23b4b4b4;\'/><ellipse cx=\'7\' cy=\'2.5\' rx=\'7\' ry=\'2.5\' style=\'fill:%23808080;\'/><ellipse cx=\'7\' cy=\'2.5\' rx=\'5.5\' ry=\'1.5\' style=\'fill:%23b4b4b4;\'/></svg>',
		'file_icon_ebook':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><path d=\'M2.668,-0.001c1.705,0.001 3.492,0.35 4.332,1.257c0.84,-0.908 2.627,-1.256 4.332,-1.257l2.668,0c0,4.112 0,8.43 0,12.541c-0.818,0 -2.181,0.005 -3,0.023c-1.184,0.026 -3.008,0.42 -3,1.437l-1,-0.017l-1,0.017c0.008,-1.017 -2,-1.437 -3,-1.437c-0.819,0 -2.182,-0.023 -3,-0.023l0,-12.541l2.668,0Z\' style=\'fill:%23808080;\'/><path d=\'M1.5,1.499l0,9.501l1.286,0c1.086,0.025 2.213,0.081 3.204,0.568l0.01,0.006c0,-2.859 0,-5.717 0,-8.576c0,-1.136 -1.49,-1.398 -2.336,-1.47c-0.708,-0.059 -1.438,-0.029 -2.164,-0.029Z\' style=\'fill:%23cdcdcd;\'/><path d=\'M12.5,1.499l0,9.501l-1.286,0c-1.086,0.025 -2.213,0.081 -3.204,0.568l-0.01,0.006c0,-2.859 0,-5.717 0,-8.576c0,-1.136 1.49,-1.398 2.336,-1.47c0.708,-0.059 1.438,-0.029 2.164,-0.029Z\' style=\'fill:%23cdcdcd;\'/></svg>',
		'file_icon_font':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><path d=\'M14,0l-14,0l0,14l14,0l0,-14Z\' style=\'fill:%23709;fill-rule:nonzero;\'/><path d=\'M4.678,11.179l1.393,0l0,-8.266l-2.616,0l0,1.052l-1.455,0l0,-2.553l10,0l0,2.554l-1.456,0l0,-1.053l-2.599,0l0,8.266l1.347,0l0,1.409l-4.614,0l0,-1.409Z\' style=\'fill:%23fff;fill-rule:nonzero;\'/></svg>',
		'file_icon_graphics':		'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><rect x=\'0\' y=\'0\' width=\'14\' height=\'14\' style=\'fill:%23808080;fill-rule:nonzero;\'/><path d=\'M7.774,8.285l4.726,4.715l-8,-3.525l-1.5,-4.975l-2,0l0,-3.5l3.525,0l-0.025,2l5,1.5l3.5,8l-4.7,-4.752c0.127,-0.22 0.2,-0.476 0.2,-0.748c0,-0.828 -0.672,-1.5 -1.5,-1.5c-0.828,0 -1.5,0.672 -1.5,1.5c0,0.828 0.672,1.5 1.5,1.5c0.283,0 0.548,-0.079 0.774,-0.215Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/></svg>',
		'file_icon_htm':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><path d=\'M6.967,0.5c-3.553,0.018 -6.467,2.947 -6.467,6.5c0,3.566 2.934,6.5 6.5,6.5c3.566,0 6.5,-2.934 6.5,-6.5c0,-3.553 -2.914,-6.482 -6.467,-6.5l-0.066,0Zm0.033,0l0,13m6.5,-6.5l-13,0m1.467,-4c3.004,2.143 7.062,2.143 10.066,0m0,8c-3.004,-2.143 -7.062,-2.143 -10.066,0m4.533,-10.333c-1.874,1.582 -2.957,3.914 -2.957,6.366c0,2.453 1.083,4.785 2.957,6.367m1,0c1.874,-1.582 2.957,-3.914 2.957,-6.367c0,-2.452 -1.083,-4.784 -2.957,-6.366\' style=\'fill:%23fff;fill-rule:nonzero;stroke:%23E44D26;stroke-width:1px;\'/></svg>',
		'file_icon_ignoredimage':	'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><path d=\'M0.369,9.141c-0.252,-0.678 -0.369,-1.396 -0.369,-2.141c0,-3.863 3.137,-7 7,-7c3.863,0 7,3.137 7,7l-0.137,1.353l-3.853,-3.853l-3.5,3.5l-2.5,-2.5l-3.641,3.641Z\' style=\'fill:%23808080;\'/><path d=\'M0.839,10.151l-0.47,-1.01l3.641,-3.641l2.5,2.5l3.5,-3.5l3.853,3.853c-0.076,0.395 -0.201,0.778 -0.341,1.147l-10.371,3.345c-0.293,-0.194 -0.579,-0.416 -0.838,-0.651l-1.474,-2.043Z\' style=\'fill:%23fff;\'/><g><path d=\'M13.522,9.5c-0.99,2.64 -3.539,4.5 -6.522,4.5c-1.426,0 -2.753,-0.421 -3.849,-1.155l6.859,-6.866l3.512,3.521Z\' style=\'fill:%23808080;\'/><path d=\'M0.839,10.151l3.171,-3.172l1.761,1.761l-3.459,3.454c-0.591,-0.632 -1.079,-1.313 -1.473,-2.043Z\' style=\'fill:%23808080;\'/></g><circle cx=\'6\' cy=\'3.5\' r=\'1.5\' style=\'fill:%23fff;\'/></svg>',
		'file_icon_image':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><path d=\'M0.369,9.141c-0.252,-0.678 -0.369,-1.396 -0.369,-2.141c0,-3.863 3.137,-7 7,-7c3.863,0 7,3.137 7,7l-0.137,1.353l-3.853,-3.853l-3.5,3.5l-2.5,-2.5l-3.641,3.641Z\' style=\'fill:%238080ff;\'/><path d=\'M0.839,10.151l-0.47,-1.01l3.641,-3.641l2.5,2.5l3.5,-3.5l3.853,3.853c-0.076,0.395 -0.201,0.778 -0.341,1.147l-10.371,3.345c-0.293,-0.194 -0.579,-0.416 -0.838,-0.651l-1.474,-2.043Z\' style=\'fill:%23fff;\'/><g><path d=\'M13.522,9.5c-0.99,2.64 -3.539,4.5 -6.522,4.5c-1.426,0 -2.753,-0.421 -3.849,-1.155l6.859,-6.866l3.512,3.521Z\' style=\'fill:%2333c;\'/><path d=\'M0.839,10.151l3.171,-3.172l1.761,1.761l-3.459,3.454c-0.591,-0.632 -1.079,-1.313 -1.473,-2.043Z\' style=\'fill:%2333c;\'/></g><circle cx=\'6\' cy=\'3.5\' r=\'1.5\' style=\'fill:%23fff;\'/></svg>',
		'file_icon_markdown':		'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><path d=\'M14,0l-14,0l0,14l14,0l0,-14Z\' style=\'fill:%236a6a95;fill-rule:nonzero;\'/><path d=\'M12,11.5l-2.5,0l0,-5.143l-2.5,2.948l-2.5,-2.948l0,5.143l-2.5,0l0,-9l2.273,0l2.721,3.377l2.733,-3.377l2.273,0l0,9Z\' style=\'fill:%23DDD;fill-rule:nonzero;\'/></svg>',
		'file_icon_office':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><rect x=\'0\' y=\'0\' width=\'14\' height=\'14\' style=\'fill:%23808080;fill-rule:nonzero;\'/><rect x=\'10\' y=\'1.5\' width=\'2.5\' height=\'1\' style=\'fill:%23cdcdcd;\'/><rect x=\'10\' y=\'4\' width=\'2.5\' height=\'1\' style=\'fill:%23cdcdcd;\'/><rect x=\'10\' y=\'6.5\' width=\'2.5\' height=\'1\' style=\'fill:%23cdcdcd;\'/><rect x=\'10\' y=\'9\' width=\'2.5\' height=\'1\' style=\'fill:%23cdcdcd;\'/><rect x=\'10\' y=\'11.5\' width=\'2.5\' height=\'1\' style=\'fill:%23cdcdcd;\'/><rect x=\'6.5\' y=\'1.5\' width=\'2.5\' height=\'1\' style=\'fill:%23cdcdcd;\'/><rect x=\'6.5\' y=\'4\' width=\'2.5\' height=\'1\' style=\'fill:%23cdcdcd;\'/><rect x=\'6.5\' y=\'6.5\' width=\'2.5\' height=\'1\' style=\'fill:%23cdcdcd;\'/><rect x=\'6.5\' y=\'9\' width=\'2.5\' height=\'1\' style=\'fill:%23cdcdcd;\'/><rect x=\'6.5\' y=\'11.5\' width=\'2.5\' height=\'1\' style=\'fill:%23cdcdcd;\'/><rect x=\'1.5\' y=\'1.5\' width=\'4\' height=\'11\' style=\'fill:%23cdcdcd;\'/></svg>',
		'file_icon_pdf':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><rect x=\'0\' y=\'0\' width=\'14\' height=\'14\' style=\'fill:%23d20000;fill-rule:nonzero;\'/><path d=\'M12.69,9.115c-0.075,0.048 -0.291,0.076 -0.428,0.076c-0.443,0 -0.99,-0.204 -1.762,-0.534c0.297,-0.022 0.568,-0.031 0.811,-0.031c0.446,0 0.575,0 1.012,0.109c0.433,0.108 0.438,0.333 0.367,0.38Zm-7.72,0.069c0.172,-0.303 0.349,-0.622 0.526,-0.961c0.44,-0.83 0.719,-1.484 0.923,-2.017c0.413,0.749 0.926,1.383 1.525,1.894c0.077,0.063 0.157,0.125 0.242,0.189c-1.224,0.246 -2.283,0.539 -3.216,0.895Zm1.428,-7.856c0.244,0 0.384,0.612 0.395,1.191c0.011,0.573 -0.121,0.974 -0.29,1.277c-0.141,-0.445 -0.205,-1.14 -0.205,-1.596c0,-0.001 -0.01,-0.872 0.1,-0.872Zm-4.788,11.025c0.142,-0.378 0.687,-1.124 1.494,-1.788c0.051,-0.038 0.177,-0.157 0.292,-0.266c-0.843,1.35 -1.412,1.885 -1.786,2.054Zm11.312,-4.029c-0.242,-0.241 -0.789,-0.367 -1.615,-0.377c-0.56,-0.008 -1.23,0.041 -1.942,0.139c-0.315,-0.184 -0.641,-0.381 -0.9,-0.622c-0.689,-0.646 -1.262,-1.539 -1.621,-2.521c0.021,-0.095 0.044,-0.173 0.062,-0.256c0,0 0.387,-2.208 0.283,-2.954c-0.015,-0.105 -0.021,-0.132 -0.051,-0.212l-0.033,-0.089c-0.104,-0.243 -0.313,-0.502 -0.639,-0.488l-0.19,-0.006l-0.003,0c-0.362,0 -0.661,0.186 -0.736,0.461c-0.236,0.872 0.007,2.171 0.448,3.856l-0.114,0.275c-0.315,0.768 -0.711,1.542 -1.058,2.225l-0.048,0.09c-0.365,0.717 -0.7,1.328 -1,1.843l-0.313,0.167c-0.021,0.014 -0.556,0.294 -0.681,0.37c-1.064,0.634 -1.77,1.356 -1.887,1.929c-0.037,0.181 -0.009,0.414 0.18,0.525l0.302,0.15c0.13,0.064 0.272,0.097 0.41,0.097c0.757,0 1.637,-0.941 2.845,-3.053c1.4,-0.457 2.994,-0.836 4.39,-1.045c1.062,0.6 2.369,1.015 3.194,1.015c0.147,0 0.274,-0.013 0.377,-0.042c0.156,-0.04 0.29,-0.13 0.372,-0.256c0.158,-0.238 0.193,-0.569 0.148,-0.91c-0.01,-0.1 -0.093,-0.226 -0.18,-0.311Z\' style=\'fill:%23fff;fill-rule:nonzero;\'/></svg>',
		'file_icon_playlist':		'<svg viewBox=\'0 0 14 14\' xmlns=\'http://www.w3.org/2000/svg\' fill-rule=\'evenodd\' clip-rule=\'evenodd\' stroke-linejoin=\'round\' stroke-miterlimit=\'2\'><path fill=\'%230f8a8a\' fill-rule=\'nonzero\' d=\'M0 0h14v14H0z\'/><path fill=\'%23fff\' d=\'M1.5 1.5h8v1h-8zM1.5 4h8v1h-8zM1.5 6.5h8v1h-8zM1.5 9h7v1h-7zM1.5 11.5H7v1H1.5zM11 1.5h1v10c-.019.681-.796 1.339-1.75 1.475-.966.138-1.75-.31-1.75-1s.784-1.362 1.75-1.5a2.28 2.28 0 01.75.013V1.5z\'/></svg>',
		'file_icon_text':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><path d=\'M14,0l-14,0l0,14l14,0l0,-14Z\' style=\'fill:%236A6A95;fill-rule:nonzero;\'/><rect x=\'6.5\' y=\'1.5\' width=\'6\' height=\'1\' style=\'fill:%23fff;\'/><rect x=\'1.5\' y=\'1.5\' width=\'3.5\' height=\'3.5\' style=\'fill:%23fff;\'/><rect x=\'1.5\' y=\'6.5\' width=\'11\' height=\'1\' style=\'fill:%23fff;\'/><rect x=\'6.5\' y=\'4\' width=\'6\' height=\'1\' style=\'fill:%23fff;\'/><rect x=\'1.5\' y=\'11.5\' width=\'8\' height=\'1\' style=\'fill:%23fff;\'/><rect x=\'1.5\' y=\'9\' width=\'11\' height=\'1\' style=\'fill:%23fff;\'/></svg>',
		'file_icon_video':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><g id=\'Layer1\'><path d=\'M14,14l0,-14l-14,0l0,14l14,0Z\'/><path d=\'M9.5,3l0,-2l-2,0l0,2l2,0Z\' style=\'fill:%23fff;\'/><path d=\'M3.5,3l0,-2l-2,0l0,2l2,0Z\' style=\'fill:%23fff;\'/><path d=\'M6.5,3l0,-2l-2,0l0,2l2,0Z\' style=\'fill:%23fff;\'/><path d=\'M12.5,3l0,-2l-2,0l0,2l2,0Z\' style=\'fill:%23fff;\'/><path d=\'M9.5,13l0,-2l-2,0l0,2l2,0Z\' style=\'fill:%23fff;\'/><path d=\'M3.5,13l0,-2l-2,0l0,2l2,0Z\' style=\'fill:%23fff;\'/><path d=\'M6.5,13l0,-2l-2,0l0,2l2,0Z\' style=\'fill:%23fff;\'/><path d=\'M12.5,13l0,-2l-2,0l0,2l2,0Z\' style=\'fill:%23fff;\'/><path d=\'M12.5,10l0,-6l-11,0l0,6l11,0Z\' style=\'fill:%23eda412;\'/></g></svg>',
		// the following are the same:
		'file_icon_bin':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><rect x=\'0\' y=\'0\' width=\'14\' height=\'14\' style=\'fill:%23808080;fill-rule:nonzero;\'/><g><path d=\'M1.247,6.495l3.263,0l0,-1.067l-0.881,0l0,-3.835l-0.974,0c-0.371,0.232 -0.727,0.371 -1.284,0.479l0,0.82l0.928,0l0,2.536l-1.052,0l0,1.067Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/><path d=\'M7,6.588c1.082,0 1.825,-0.89 1.825,-2.567c0,-1.67 -0.743,-2.521 -1.825,-2.521c-1.082,0 -1.825,0.843 -1.825,2.521c0,1.677 0.743,2.567 1.825,2.567Zm0,-1.021c-0.309,0 -0.572,-0.247 -0.572,-1.546c0,-1.299 0.263,-1.5 0.572,-1.5c0.309,0 0.572,0.201 0.572,1.5c0,1.299 -0.263,1.546 -0.572,1.546Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/><path d=\'M9.598,6.495l3.263,0l0,-1.067l-0.882,0l0,-3.835l-0.974,0c-0.371,0.232 -0.727,0.371 -1.283,0.479l0,0.82l0.927,0l0,2.536l-1.051,0l0,1.067Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/><path d=\'M2.825,12.588c1.082,0 1.824,-0.89 1.824,-2.567c0,-1.67 -0.742,-2.521 -1.824,-2.521c-1.083,0 -1.825,0.843 -1.825,2.521c0,1.677 0.742,2.567 1.825,2.567Zm0,-1.021c-0.31,0 -0.572,-0.247 -0.572,-1.546c0,-1.299 0.262,-1.5 0.572,-1.5c0.309,0 0.572,0.201 0.572,1.5c0,1.299 -0.263,1.546 -0.572,1.546Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/><path d=\'M5.423,12.495l3.263,0l0,-1.067l-0.882,0l0,-3.835l-0.974,0c-0.371,0.232 -0.727,0.371 -1.284,0.479l0,0.82l0.928,0l0,2.536l-1.051,0l0,1.067Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/><path d=\'M11.175,12.588c1.083,0 1.825,-0.89 1.825,-2.567c0,-1.67 -0.742,-2.521 -1.825,-2.521c-1.082,0 -1.824,0.843 -1.824,2.521c0,1.677 0.742,2.567 1.824,2.567Zm0,-1.021c-0.309,0 -0.572,-0.247 -0.572,-1.546c0,-1.299 0.263,-1.5 0.572,-1.5c0.31,0 0.572,0.201 0.572,1.5c0,1.299 -0.262,1.546 -0.572,1.546Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/></g></svg>',
		'file_icon_other':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><rect x=\'0\' y=\'0\' width=\'14\' height=\'14\' style=\'fill:%23808080;fill-rule:nonzero;\'/><g><path d=\'M1.247,6.495l3.263,0l0,-1.067l-0.881,0l0,-3.835l-0.974,0c-0.371,0.232 -0.727,0.371 -1.284,0.479l0,0.82l0.928,0l0,2.536l-1.052,0l0,1.067Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/><path d=\'M7,6.588c1.082,0 1.825,-0.89 1.825,-2.567c0,-1.67 -0.743,-2.521 -1.825,-2.521c-1.082,0 -1.825,0.843 -1.825,2.521c0,1.677 0.743,2.567 1.825,2.567Zm0,-1.021c-0.309,0 -0.572,-0.247 -0.572,-1.546c0,-1.299 0.263,-1.5 0.572,-1.5c0.309,0 0.572,0.201 0.572,1.5c0,1.299 -0.263,1.546 -0.572,1.546Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/><path d=\'M9.598,6.495l3.263,0l0,-1.067l-0.882,0l0,-3.835l-0.974,0c-0.371,0.232 -0.727,0.371 -1.283,0.479l0,0.82l0.927,0l0,2.536l-1.051,0l0,1.067Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/><path d=\'M2.825,12.588c1.082,0 1.824,-0.89 1.824,-2.567c0,-1.67 -0.742,-2.521 -1.824,-2.521c-1.083,0 -1.825,0.843 -1.825,2.521c0,1.677 0.742,2.567 1.825,2.567Zm0,-1.021c-0.31,0 -0.572,-0.247 -0.572,-1.546c0,-1.299 0.262,-1.5 0.572,-1.5c0.309,0 0.572,0.201 0.572,1.5c0,1.299 -0.263,1.546 -0.572,1.546Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/><path d=\'M5.423,12.495l3.263,0l0,-1.067l-0.882,0l0,-3.835l-0.974,0c-0.371,0.232 -0.727,0.371 -1.284,0.479l0,0.82l0.928,0l0,2.536l-1.051,0l0,1.067Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/><path d=\'M11.175,12.588c1.083,0 1.825,-0.89 1.825,-2.567c0,-1.67 -0.742,-2.521 -1.825,-2.521c-1.082,0 -1.824,0.843 -1.824,2.521c0,1.677 0.742,2.567 1.824,2.567Zm0,-1.021c-0.309,0 -0.572,-0.247 -0.572,-1.546c0,-1.299 0.263,-1.5 0.572,-1.5c0.31,0 0.572,0.201 0.572,1.5c0,1.299 -0.262,1.546 -0.572,1.546Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/></g></svg>',
		'file_icon_system':			'<svg xmlns=\'http://www.w3.org/2000/svg\' viewBox=\'0 0 14 14\'><rect x=\'0\' y=\'0\' width=\'14\' height=\'14\' style=\'fill:%23808080;fill-rule:nonzero;\'/><g><path d=\'M1.247,6.495l3.263,0l0,-1.067l-0.881,0l0,-3.835l-0.974,0c-0.371,0.232 -0.727,0.371 -1.284,0.479l0,0.82l0.928,0l0,2.536l-1.052,0l0,1.067Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/><path d=\'M7,6.588c1.082,0 1.825,-0.89 1.825,-2.567c0,-1.67 -0.743,-2.521 -1.825,-2.521c-1.082,0 -1.825,0.843 -1.825,2.521c0,1.677 0.743,2.567 1.825,2.567Zm0,-1.021c-0.309,0 -0.572,-0.247 -0.572,-1.546c0,-1.299 0.263,-1.5 0.572,-1.5c0.309,0 0.572,0.201 0.572,1.5c0,1.299 -0.263,1.546 -0.572,1.546Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/><path d=\'M9.598,6.495l3.263,0l0,-1.067l-0.882,0l0,-3.835l-0.974,0c-0.371,0.232 -0.727,0.371 -1.283,0.479l0,0.82l0.927,0l0,2.536l-1.051,0l0,1.067Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/><path d=\'M2.825,12.588c1.082,0 1.824,-0.89 1.824,-2.567c0,-1.67 -0.742,-2.521 -1.824,-2.521c-1.083,0 -1.825,0.843 -1.825,2.521c0,1.677 0.742,2.567 1.825,2.567Zm0,-1.021c-0.31,0 -0.572,-0.247 -0.572,-1.546c0,-1.299 0.262,-1.5 0.572,-1.5c0.309,0 0.572,0.201 0.572,1.5c0,1.299 -0.263,1.546 -0.572,1.546Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/><path d=\'M5.423,12.495l3.263,0l0,-1.067l-0.882,0l0,-3.835l-0.974,0c-0.371,0.232 -0.727,0.371 -1.284,0.479l0,0.82l0.928,0l0,2.536l-1.051,0l0,1.067Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/><path d=\'M11.175,12.588c1.083,0 1.825,-0.89 1.825,-2.567c0,-1.67 -0.742,-2.521 -1.825,-2.521c-1.082,0 -1.824,0.843 -1.824,2.521c0,1.677 0.742,2.567 1.824,2.567Zm0,-1.021c-0.309,0 -0.572,-0.247 -0.572,-1.546c0,-1.299 0.263,-1.5 0.572,-1.5c0.31,0 0.572,0.201 0.572,1.5c0,1.299 -0.262,1.546 -0.572,1.546Z\' style=\'fill:%23CCC;fill-rule:nonzero;\'/></g></svg>'
	};
	// Programatically add File icon CSS rules
	function CSS_UI_Icon_Rules() {
		let rules = '', kind, class_name;
			rules = `
				#menu ul a::before { background-image:${ SVG_UI_File_Icon('file_icon_file') }; }
				#menu ul a[href^="file"]::before { background-image:${ SVG_UI_File_Icon('file_icon_dir') }; }
				#menu ul a[href^="http"]::before { background-image:${ SVG_UI_File_Icon('file_icon_htm') }; }
				body:not(.use_custom_icons) #dir_list tr.dir a.icon span::before { background-image:${ SVG_UI_File_Icon('file_icon_dir_default') }; background-size:auto 13px; }
				body:not(.use_custom_icons) #dir_list tr.file:not(.app) a.icon span::before { background-image:${ SVG_UI_File_Icon('file_icon_file_default') }; background-size:auto 13px; }`;
		for ( let icon in SVG_UI_File_Icons ) {
			kind = icon.slice(icon.lastIndexOf('_') + 1);
			class_name = kind;
			// exceptions
			if ( kind === 'dirinvisible' )		{ class_name = 'dir.invisible'; }
			if ( kind === 'ignoredimage' )		{ class_name = 'ignored_image'; }
			if ( kind === 'open' )				{ class_name = 'has_subdirectory'; kind = 'dir_open'; }
			if ( /alias|symlink/.test(kind) )	{ class_name = 'link'; }
			// add rules for dir_list items, content_header, stats details:
			rules += `body.use_custom_icons #dir_list tr.${ class_name } a.icon span.has_icon_before_before, #content_pane[data-content="has_${ class_name }"] #title span::before, body.use_custom_icons #stats tbody tr.${ class_name } .stats_kind.has_icon_before::before { background-image: url("data:image/svg+xml;utf8,${ SVG_UI_File_Icons['file_icon_'+kind] }"); }`;
		}
		return rules;
	}
	// Text Editing UI Icons
	function SVG_Text_Editing_UI_Icon(icon_name) { return `url("data:image/svg+xml;utf8,${ SVG_Text_Editing_UI_Icons[icon_name] }")`; }
	const SVG_Text_Editing_UI_Icons = {
		'toggle_theme':		'<svg viewBox=\'0 0 16 16\' xmlns=\'http://www.w3.org/2000/svg\' fill-rule=\'evenodd\' clip-rule=\'evenodd\' stroke-linejoin=\'round\' stroke-miterlimit=\'2\'><path d=\'M8 0c4.415 0 8 3.585 8 8s-3.585 8-8 8-8-3.585-8-8 3.585-8 8-8zm0 2c3.311 0 6 2.689 6 6s-2.689 6-6 6V2z\' fill=\'%23333\'/></svg>',
		'show_markdown':	'<svg xmlns=\'http://www.w3.org/2000/svg\' width=\'100\' height=\'60\'><g fill=\'%23333\'><path d=\'M42.215 60l.17-46.24h-.255L30.06 60h-7.99L10.255 13.76H10L10.169 60H.905V-.18H14.59l11.56 44.03h.34L37.794-.18H52.16V60h-9.945zM99.589 29.996c0 9.519-1.997 16.901-5.992 22.142C89.602 57.38 83.722 60 75.959 60H60.914V-.18h15.13c7.706 0 13.558 2.65 17.553 7.948 3.995 5.299 5.992 12.708 5.992 22.228zm-10.2 0c0-3.57-.326-6.686-.978-9.35-.651-2.663-1.572-4.873-2.762-6.63-1.19-1.756-2.607-3.073-4.25-3.953-1.645-.878-3.43-1.317-5.355-1.317h-4.845v42.33h4.845c1.926 0 3.711-.438 5.355-1.317 1.643-.878 3.06-2.195 4.25-3.953 1.189-1.756 2.11-3.952 2.762-6.587.651-2.637.978-5.709.978-9.223z\'/></g></svg>',
		'show_source':		'<svg viewBox=\'0 0 22 14\' xmlns=\'http://www.w3.org/2000/svg\' fill-rule=\'evenodd\' clip-rule=\'evenodd\' stroke-linejoin=\'round\' stroke-miterlimit=\'2\'><path fill=\'none\' d=\'M0 0h21.996v14H0z\'/><clipPath id=\'a\'><path d=\'M0 0h21.996v14H0z\'/></clipPath><g clip-path=\'url(%23a)\' fill=\'%23333\'><path d=\'M0 7.393v-.786l6.062-3.5.75 1.3L2.32 7l4.492 2.593-.75 1.3L0 7.393zM21.996 6.607v.786l-6.062 3.5-.75-1.3L19.676 7l-4.492-2.593.75-1.3 6.062 3.5zM15.15 1.313l-1.3-.75-7 12.124 1.3.75 7-12.124z\'/></g></svg>',
		'show_preview':		'<svg viewBox=\'0 0 16 16\' xmlns=\'http://www.w3.org/2000/svg\' fill-rule=\'evenodd\' clip-rule=\'evenodd\' stroke-linejoin=\'round\' stroke-miterlimit=\'2\'><path d=\'M10 2.5V1H0v1.5h4V15h2V2.5h4zM9 6.5V8h2v4.053c0 2.211 1.547 3.442 3 3.442.989 0 1.556-.258 2-.495v-1.5c-.565.257-.882.376-1.507.376-.847 0-1.493-.474-1.493-1.876V8h2.5V6.5H13v-3h-1.98v3H9z\' fill=\'%23333\' fill-rule=\'nonzero\'/></svg>',
		'show_html':		'<svg viewBox=\'0 0 22 16\' xmlns=\'http://www.w3.org/2000/svg\' fill-rule=\'evenodd\' clip-rule=\'evenodd\' stroke-linejoin=\'round\' stroke-miterlimit=\'2\'><path fill=\'none\' d=\'M0 0h21.022v16H0z\'/><clipPath id=\'a\'><path d=\'M0 0h21.022v16H0z\'/></clipPath><g clip-path=\'url(%23a)\' fill=\'%23333\'><path d=\'M7.732.222L9.5 1.99 3.49 8l6.01 6.01-1.768 1.768L-.046 8 7.732.222zM13.268 15.778L11.5 14.01 17.51 8 11.5 1.99 13.268.222 21.046 8l-7.778 7.778z\'/></g></svg>',
		'toggle_split':		'<svg viewBox=\'0 0 16 16\' xmlns=\'http://www.w3.org/2000/svg\' fill-rule=\'evenodd\' clip-rule=\'evenodd\' stroke-linejoin=\'round\' stroke-miterlimit=\'2\'><path d=\'M0 0v16h16V0H0zm14 14H9V2h5v12zm-7 0H2V2h5v12z\' fill=\'%23333\' fill-rule=\'nonzero\'/></svg>',
		'save_btn':			'<svg viewBox=\'0 0 16 16\' xmlns=\'http://www.w3.org/2000/svg\' fill-rule=\'evenodd\' clip-rule=\'evenodd\' stroke-linejoin=\'round\' stroke-miterlimit=\'2\'><g fill=\'%23333\'><path d=\'M16 0v10.02L14 10V2H2v8l-2 .02V0h16z\' fill-rule=\'nonzero\'/><path d=\'M7 5h2v9H7z\'/><path d=\'M3.757 11.757l1.415-1.414L8 13.172l2.828-2.829 1.415 1.414L8 16l-4.243-4.243z\'/></g></svg>',
		'save_btn_edited':	'<svg viewBox=\'0 0 16 16\' xmlns=\'http://www.w3.org/2000/svg\' fill-rule=\'evenodd\' clip-rule=\'evenodd\' stroke-linejoin=\'round\' stroke-miterlimit=\'2\'><g fill=\'%23DD2222\'><path d=\'M16 0v10.02L14 10V2H2v8l-2 .02V0h16z\' fill-rule=\'nonzero\'/><path d=\'M7 5h2v9H7z\'/><path d=\'M3.757 11.757l1.415-1.414L8 13.172l2.828-2.829 1.415 1.414L8 16l-4.243-4.243z\'/></g></svg>'
	};
	//***** END UI ELEMENTS

	//***** STYLES *****//
	const $warning_styles = `
		#warnings_container													{ width:26em; transform:translate(-50%, 0); display:none; flex-direction:column; border-radius:0 0 3px 3px; position:absolute; top:0; left:50%; z-index:9999; box-shadow:0px 2px 12px 0 #333; font-size:0.875em; color:#111; overflow:hidden; }
		body.has_warning #warnings_container								{ display:flex; }
		#warnings_header													{ padding:1rem 1.5rem; background-position:left 1.25rem center; background-repeat:no-repeat; background-size:24px; }
		#warnings_container:not(.warning_make_playlist) #warnings_header	{ background-image:${ SVG_UI_Icon("error") }; }
		#warnings_header h3													{ display:none; margin:0; text-indent:2.25em; }
		#warnings_container:not(.warning_make_playlist) h3#warning_header, #warnings_container.warning_make_playlist h3#make_playlist_header	{ display:block;}
		body#top.edited #warnings_container.unloading h3::before			{ content: "Text Editor: " }
		#warnings .warning													{ padding: 0 1.5rem 1rem; display:none; hyphens:none; }
		#warning_buttons_container									 		{ padding:1rem 1.5rem; }
		#warning_buttons													{ display:flex; flex-direction:row; }
		#warning_buttons button												{ min-width:4em; display:none; font-size:1em; }
		button.focus, button:focus											{ background-color: #0E4399; color: #EEE; outline:none; }
		#warning_btn_dont_save												{ margin-right: auto; }
		#warning_btn_cancel, #warning_btn_clear, #warning_btn_save			{ margin-left: 0.5rem; }
		#warning_btn_ok														{ margin-left:auto; }
		#warnings_container.warning_close_font #warning_close_font, #warnings_container.warning_close_playlist #warning_close_playlist, #warnings_container.unloading #warning_unsaved_text, #warnings_container.unloading #warning_btn_dont_save, #warnings_container.unloading #warning_btn_cancel, #warnings_container.unloading #warning_btn_save	{ display:inline-block; }
		#warnings_container.clear #warning_buttons							{ justify-content:space-between; }
		#warnings_container.clear #warning_clear_text, #warnings_container.clear #warning_btn_cancel, #warnings_container.clear #warning_btn_clear			{ display:inline-block; }
		#warnings_container.warning_local_bookmark #warning_local_bookmark, #warnings_container.warning_local_bookmark #warning_btn_ok { display:inline-block; margin-left:auto; }
		#warnings_container.warning_local_file #warning_local_file, #warnings_container.warning_local_file #warning_btn_ok { display:inline-block; margin-left:auto; }
		#warnings_container.warning_close_font #warning_btn_ok				{ display:inline-block; margin-left:auto; }
		#warnings_container.warning_close_font #warning_btn_cancel			{ display:inline-block; }
		#warnings_container.warning_close_playlist #warning_btn_ok			{ display:inline-block; margin-left:auto; }
		#warnings_container.warning_close_playlist #warning_btn_cancel		{ display:inline-block; }
		#warning_make_playlist fieldset										{ margin:0; padding:0; border:0; }
		#warning_make_playlist fieldset div									{ padding:0 0 2px; }
		#warning_make_playlist .indent										{ text-indent:2em; }
		#warning_make_playlist input										{ margin-right:6px; }
		#warnings_container.warning_make_playlist #warning_make_playlist																{ display:flex; flex-direction:column; }
		#warnings_container.warning_make_playlist #warning_btn_ok, #warnings_container.warning_make_playlist #warning_btn_cancel 		{ display: inline-block; }
		#warnings_container.warning_no_playlist #warning_no_playlist, #warnings_container.warning_no_playlist #warning_btn_ok 			{ display: inline-block; }
		#warnings_container.warning_local_playlist #warning_local_playlist, #warnings_container.warning_local_playlist #warning_btn_ok	{ display:inline-block; margin-left:auto; }
	`;
	var $main_styles = `
		:root, html, body									{ margin:0; padding:0; width:100%; max-width:100%; height:100vh; overflow:hidden; border:0; border-radius:0; font-family: ${$settings.UI_font}; font-size: ${ $settings.UI_font_size}; hyphens:auto; display:flex; }
		table												{ width:100%; border:0; border-collapse: collapse; }
		#sidebar_wrapper li, #toolbar li					{ list-style:none; }
		a, a:hover											{ text-decoration: none !important; }
		button												{ padding:2px 6px; border:solid 1px #333; border-radius:3px; cursor:pointer; height:18px; font-family:${$settings.UI_font} !important; font-size:1em !important; line-height:0;}
		button.focus, button:focus 							{ outline:none; border-radius:3px !important; border-style:solid !important; border-width:1px !important; border-color:#222 !important; }
		textarea:focus, audio:focus 						{ outline:none; }
		#main_content										{ width:100%; display:flex; flex-direction:row; overflow:hidden; }
			/***** SIDEBAR STYLES *****/
		#sidebar_wrapper					{ min-width:220px; padding:0; position:relative; z-index:1; display:flex; flex-direction:column; }
		#sidebar							{ overflow:hidden; font-size:0.875rem; display:flex; flex-direction:column; flex-basis:100%; }
		#sidebar_header						{ font-size:0.875rem; position:relative; z-index:3; user-select:none; -webkit-user-select:none; display:flex; flex-direction:column; }
		#sidebar_title						{ font-weight:normal; display:flex; flex-direction:row;	 }
		#sidebar_title div					{ padding: 4px 6px; text-align:center; letter-spacing:0.5em; text-indent:0.75em; flex-basis:100%; }
		#sidebar_header_body				{ display:flex; flex-direction:column; }
		#hide_sidebar						{ position:absolute; top:0; right:0; cursor:pointer; width:24px; height:21px; z-index:9997; background-image: ${ SVG_UI_Icon("toggle") }; background-size:18px; background-position:center; }
		#sidebar ul							{ -webkit-margin-before:0em !important; -webkit-margin-after:0em !important; -webkit-padding-start:0em; }
		#sidebar_menus						{ cursor:pointer; display:flex; flex-direction:row; }
			/* PARENT MENU */
		#parent_dir_menu					{ flex-basis:24px; max-width:24px; min-width:24px; padding:0; position:relative; }
		#parent_dir_nav						{ margin:0; padding:0; display:block; position:absolute; top:0; right:0; bottom:0; left:0; }
		#parent_dir_nav a					{ height:100%; padding:0; text-align:center; background-position:center; background-repeat:no-repeat; background-size:12px; }
			/* PARENTS MENU */
		#parents_dir_menu					{ padding:0; flex-grow:1; }
		#parents_dir_nav					{ margin:0; padding:0; display:flex; line-height:1.4; }
		#current_dir_path					{ cursor:pointer; flex:auto; font-weight:bold; hyphens:none; padding:4px 6px 4px 6px; text-align:center; word-break:break-word; z-index:9998; }
		#close_playlist_btn_container		{ display:none; flex-direction:column; justify-content:center; flex-basis:24px; max-width:24px; min-width:24px; padding:0; }
		#close_playlist_btn					{ background-image:${ SVG_UI_Icon("multiply") }; background-position:center; background-size:12px; display:flex; flex-direction:column; justify-content:center; flex-basis:24px; max-width:24px; min-width:24px; padding:0; opacity:0.55; }
		#parents_links						{ margin:0; padding:0; display:none; position:absolute; right:0; left:0; box-shadow: 0px 4px 6px -3px #333; z-index:9998; }
		#parents_links a					{ margin:0; padding:4px 8px; display:block; }
			/* MAIN MENU */
		#menu_container						{ display:flex; flex-direction:column; justify-content:center; flex-basis:24px; max-width:24px; min-width:24px; padding:0; }
		#menu_nav							{ margin:0; padding:0; display:block; cursor:pointer; }
		#menu_nav div						{ width:24px; background-image: ${ SVG_UI_Icon("menu")}; background-position:center; background-repeat:no-repeat; background-size:13px; }
		#menu								{ display:none; margin:0; padding:0; position:absolute; right:0;left:0; zindex:9998; box-shadow: 0px 4px 6px -3px #333; z-index:9998; }
		#menu li.has_submenu				{ position:relative; background-position:right 6px center; background-repeat:no-repeat; background-size:12px; }
		#menu li.bookmark a::before			{ content:""; width:24px; height: 12px; background-size:12px; }
		.submenu							{ display:none; margin:0; padding:0; position:absolute; top:-1px !important; left:100%; right:0; width:100%; box-shadow:0px 4px 6px -3px #333; width:100%; max-width:240px; }
		#menu ul.submenu li a				{ margin:0; padding:6px 8px 6px 0; }
		#menu input							{ width:0; float:left; }
		.menu_item							{ margin:0; padding:6px 8px 6px 0; display:flex; }
		.menu_item::before					{ content:""; width:24px; height:9px; margin:2px 0 -2px; display:inline-block; background-position:center; background-repeat:no-repeat; }
		li.has_submenu:hover > span, .menu_item:hover, #sidebar_menus li.selected > span	{ font-weight:bold; }
			/* SIDEBAR BUTTONS */
		#sidebar_buttons					{ position:relative; display:flex; flex-direction:row; }
		#sidebar_buttons_left				{ padding:6px; }
		#show_details						{ margin-top:0; margin-right:0.5em; padding:0 4px 0 4px; }
		#show::before						{ content:"Show "; }
		#show_invisibles_container 			{ cursor:pointer; display:inline-flex; vertical-align:text-top; padding:0; height:100%; }
		#show_invisibles					{ cursor:pointer; margin:0 4px 0 0; }
		#show_invisibles:hover span			{ font-weight:bold; }
			/* GRID BTN */
		#grid_btn							{ display:none; margin:0 0 0 auto; padding:0; width:24px; position:relative; z-index:9997; background-color:inherit; background-position:center; background-size:14px; cursor:pointer; outline:none; }
		#grid_btn ul						{ display:none; margin:0; padding:0; padding-right:24px; padding-left:0px; position:absolute; top:-1px; right:-1px; background-position:right 5px top 8px; background-repeat:no-repeat; background-size:14px; box-shadow:0px 4px 6px -3px #333; }
		#grid_btn ul li						{ padding:4px 6px; text-align:right; width:100%; white-space:pre; box-sizing:border-box; }
			/* SORTING ITEMS */
		#sorting_row_1						{ display:flex; cursor:pointer; justify-content:space-between; flex-direction:row; }
		#sorting_row_2						{ display:none; cursor:pointer; justify-content:space-between; flex-direction:row; }
		#sorting_row_1 div, #sorting_row_2 div { flex-grow:1; padding:0; }
		#sorting .sorting					{ white-space:pre; }
		#sorting_row_1 span					{ display:inline-block; padding:6px 0; }
		#sorting_row_2 span					{ display:inline-block; padding:0 0 6px 0; }
		.sorting:hover span					{ font-weight:bold; }
		.sorting span::before, .sorting span::after	{ content:""; width:16px; height:8px; display:inline-block; position:relative; color:#CCC; background-position:center; background-repeat:no-repeat; background-size:10px; }
		.sorting.down span::after			{ transform:rotate(180deg) }
		#sort_by_name input					{ display:none; margin:0 4px 0 2px; }
		#sort_by_name, #sort_by_size		{ text-align:left; }
		#sort_by_date, #sort_by_kind		{ text-align:center; }
		#sort_by_default, #sort_by_time, #sort_by_ext	{ text-align:right; }
		body.sort_direction_up .sorting span::after	{ transform:rotate(180deg) !important; }
		#sort_by_time						{ display:none; }
		body.has_media #sort_by_name span	{ padding:4px 0; }
		body.has_media #sort_by_name input	{ position:relative; bottom:-2px; }
		body.has_media #sort_by_default 	{ text-align:center; }
		body.has_media #sort_by_time, body.has_playlist #sort_by_time	{ display:block; }
			/* TEXT EDITOR ROW */
		#text_editor_row					{ display:none; }
		#text_editor_row a					{ padding:6px 0 6px 16px; text-align:left; font-weight:bold; }
			/***** DIR_LIST STYLES *****/
		#dir_list_wrapper					{ overflow:scroll; position:relative; margin-bottom:-1px; }
		#dir_list							{ overflow:hidden; position:relative; font-size:0.875rem; }
		#tbody								{ counter-reset:row; height:100%; overflow:hidden; transition:opacity .125s; background-position:center; background-repeat:no-repeat; background-size:50%; }
		#tbody > tr							{ margin-inline-start:0; display:none; grid-gap:0; grid-template-columns:minmax(auto,6rem) minmax(12em,1fr) minmax(auto,6em); }
		.tbody_row_cell						{ padding:0; }
		.tbody_row_cell_name				{ grid-column: 1 / span 3; font-variant-numeric:tabular-nums; }
		.tbody_row_cell_name_a				{ display:flex; text-decoration:none; -webkit-padding-start:0; -moz-padding-start:0; }
		.tbody_row_cell_name_a::before		{ display:none; counter-increment:row; content:counter(row); width:36px; min-width:36px; height:14px; max-height:14px; min-height:14px; text-align:right; padding-right:1px; }
		.tbody_row_cell_name_a_span			{ display:flex; line-height:1.4; text-align:left; word-break:break-word; }
		.tbody_row_cell_name_a_span input	{ display:none; margin:2px 6px 0 0; }
		.tbody_row_cell_details				{ display:none; text-align:right; white-space:nowrap; max-height:1em; font-variant-numeric:tabular-nums; padding:0 12px 3px 0; }
		.tbody_row_cell_details.size		{ grid-column: 1; grid-row: 2; padding:0 8px 3px 8px; }
		.tbody_row_cell_details.date		{ grid-column: 2; grid-row: 2; text-align:right; overflow:hidden; overflow-wrap:break-word; text-overflow:""; padding-right:8px; }
		.tbody_row_cell_details.date span	{ white-space:pre; display:block; float:right; }
		.tbody_row_cell_details.kind		{ grid-column: 3; grid-row: 2; overflow:hidden; text-overflow:ellipsis; }
		.tbody_row_cell_details.kind::first-letter		{ text-transform:uppercase; }
		.tbody_row_cell_name_a				{ padding:5px 12px 5px 0; }
		.tbody_row_cell_name_a::before		{ margin-top:1px; }
		.tbody_row_cell_media_duration		{ display:none; grid-column: 3 / span 1; font-variant-numeric:tabular-nums; padding:6px 12px 3px 6px; text-align:right !important; }
		.has_subdirectory .dir_list_subdir	{ display:block; grid-column:1/ span 3; grid-row:3; width:100%; border:0; }
		tr.media:not(.local) .tbody_row_cell_name								{ grid-column: 1 / span 2; }
		tr.media:not(.local) .tbody_row_cell_name_a								{ padding-right:0;  }
		tr.media:not(.local) .tbody_row_cell_media_duration						{ display:inline-block; }
		tr.media.local input													{ cursor:not-allowed; opacity:0.5; outline:solid #666 1px; }
		#tbody tr:hover a, tr.selected a, tr.media[class*="_loaded"] a			{ font-weight:bold; }
		tr.disabled, tr.disabled a, tr.disabled span, body.ignore_ignored_items tr.ignored, body.ignore_ignored_items tr.ignored a	{ cursor:not-allowed; }
		#dir_list #tbody .error 												{ display:block; padding:6px 8px; }
		#dir_list #tbody .error::before 										{ display:none; }
			/***** SIDEBAR FOOTER *****/
		#tfoot												{ margin-top:auto; padding:0; position:relative; font-size:0.875rem; user-select:none; -webkit-user-select:none; display:flex; flex-direction:column; }
			/* STATS */
		#stats_container									{ display:block; max-height: ${ (window.innerHeight * 0.33) }px; }
		#stats												{ cursor:pointer; float:left; width:100%; overflow:hidden;font-size:0.875rem; }
		body:not(.has_stats) #stats tbody, body.has_stats #stats_summary, body:not(.has_stats) #stats_summary_detailed_container, #stats .stats_kind span.file, #stats .stats_kind span.media						{ display:none; }
		body.theme_light #footer_links:hover ul, body.theme_light #tfoot:hover, body.theme_light #stats_summary_detailed_container					{ box-shadow: 0px -4px 4px 0px rgba(128,128,128,0.6); }
		body.theme_dark #footer_links:hover ul, body.theme_dark #tfoot:hover, body.theme_dark #stats_summary_detailed_container					{ box-shadow: 0px -4px 4px 0px  rgba(32,32,32,0.6); }
		#stats_summary_detailed_container					{ overflow-y:scroll; }
		#stats_summary_detailed_dirs .stats_kind::before	{ background-image:${ SVG_UI_File_Icon("file_icon_dir_default") }; }
		#stats_summary_detailed_files .stats_kind::before	{ background-image:${ SVG_UI_File_Icon("file_icon_file_default") }; }
		#stats_details_container							{ display:block; position:relative; overflow-y:scroll; }
		#stats_details										{ display:block; }
		#stats_summary th 									{ font-weight:normal; }
		#stats_summary_detailed_container tr:hover, #stats_details tr:hover		{ font-weight:bold; }
		#stats tr 											{ line-height:1.2; }
		#stats a 											{ padding:4px 12px 4px 0; }
		#stats_summary th, #stats_summary_detailed_total th, #stats_summary_playlist_container	{ padding:5px 8px; overflow:hidden; white-space:pre; }
		#stats a::before									{ content:attr(data-count); }
		#stats .stats_kind span								{ display:inline-block;  margin-right:0.5em; white-space:nowrap; }
		#stats .stats_kind span::first-letter				{ text-transform:uppercase }
			/* SIDEBAR FOOTER LINKS */
		#footer_links										{ margin-top:-1px; position:absolute; z-index:1; right:0; cursor:pointer; float:right; width:24px; height:100%; background-image:${ SVG_UI_Icon("toggle") }; transform:rotate(180deg) !important; background-size:18px; background-position:2px center; }
		#footer_links ul									{ display:none; margin:0; padding:0; position:absolute; top:calc(100% - 1px); right:unset; left:calc(100% - 27px); white-space:nowrap; box-shadow:-0px -3px 6px -3px #333; transform:rotate(180deg) !important; }
		#open_in_content_pane								{ padding:4px 6px; text-align:right; }
		#view_directory_source								{ padding:4px 6px; text-align:right; }
			/* CLASSES AND ELEMENTS */
		.has_icon_before::before, .has_icon_before_before							{ content:""; display:block; float:left; max-width:28px; width:28px; min-width:28px; height:14px; max-height:14px; min-height:14px; margin-top:1px; background-position:center; background-repeat:no-repeat; background-size:14px; }
		tr.ignored .has_icon_before::before, tr.ignored .has_icon_before_before					{ opacity:0.75; filter:grayscale(100%); }
		.has_checkmark_before::before						{ content:""; height:9px; background-position:center; background-repeat:no-repeat; }
		ul.has_popout_menu, .editor_theme_light #toolbar ul.has_popout_menu				{ background-color:#C0C0C0; border:solid 1px #666; }
		ul.has_popout_menu li								{ background-color:#D0D0D0; }
		ul.has_popout_menu li:hover							{ background-color:#E0E0E0; }
		.theme_dark #sidebar_wrapper ul.has_popout_menu		{ border:solid 1px #111; }
		.theme_dark #sidebar_wrapper ul.has_popout_menu, .theme_dark #sidebar_wrapper ul.has_popout_menu li	{ background-color:#505050; }
		body.editor_theme_dark #toolbar ul.has_popout_menu li												{ background-color:#C0C0C0; }
		.theme_dark #sidebar_wrapper ul.has_popout_menu li:hover											{ background-color:#686868; }
			/***** END SIDEBAR STYLES *****/
			/***** CONTENT STYLES *****/
		#content_pane						{ height:100%; padding:0; position:relative; transform:scale(1); vertical-align:top; display:flex; flex-direction:column; contain:strict; }
		#content_header						{ display:block; font-size:0.875rem; position:relative; z-index:3; }
		#content_header table				{ font-size:0.875rem; z-index:2; }
		#content_title						{ text-align:center; display:flex; flex-direction:row; justify-content:space-between; }
			/* CONTENT TITLE BUTTONS LEFT */
		#title_buttons_left					{ padding:4px 6px; text-align:left; width:4rem; max-width:9.5em; vertical-align:top; }
		#reload_btn							{ float:left; width:52px; }
		#reload_btn::before					{ content:"Reload"; }
		#prev_next_btns						{ margin-left:8px; cursor:pointer; float:left; line-height:1; padding:0; position:relative; }
		#prev_next_btns span				{ width:2em; height:18px; }
		#prev_btn, #next_btn				{ background-position:center 36%; background-repeat:no-repeat; background-size:33%; }
		#prev_btn							{ background-image:${ SVG_UI_Icon("chevron_left") }; }
		#next_btn							{ background-image:${ SVG_UI_Icon("chevron_right") }; }
			/***** CONTENT TITLE *****/
		#title								{ line-height:1.4; min-width:10em; min-height:18px; padding:4px 8px; text-align:center; word-break:break-word; vertical-align:top; cursor:pointer; }
		#title span							{ font-weight:bold; hyphens:none; }
		#title span::before					{ content:""; margin-top:1px; margin-bottom:-2px; width:24px; height:14px; display:inline-block; background-position:center; background-repeat:no-repeat; font-weight:normal; }
		#title span::after					{ font-weight:bold; }
		#content_pane[data-content="has_image"] #title span::after		{ font-weight:normal; }
			/* CONTENT TITLE BUTTONS RIGHT */
		#title_buttons_right				{ padding:4px 6px; text-align:right; width:4rem; max-width:9.5em; vertical-align:top; }
		#scale								{ cursor:pointer; float:right; line-height:1; margin-right:8px; padding:0 4px; position:relative; background-color:#FFF; }
		#scale span							{ width:2em; height:18px; background-position:center 36%; background-repeat:no-repeat; background-size:10px; }
		#decrease							{ margin-left:-4px; background-image:${ SVG_UI_Icon("minus") }; }
		#increase							{ margin-right:-4px; background-image:${ SVG_UI_Icon("plus") }; }
		#close_btn							{ float:right; padding:0px; width:52px; }
		#close_btn::before					{ content:"Close"; }
		.split_btn							{ display:none; }
		.split_btn span						{ display:inline-flex; }
		.split_btn::after					{ content:""; position: absolute; top: 0; bottom: 0; left: 50%; }
			/* CONTENT AUDIO TITLE */
		#content_audio_title				{ display:none;}
		#content_audio_title span			{ display:block; width:100%; cursor:pointer; padding:4px 6px 6px; font-weight:bold; text-align:center; line-height:1.4; }
		#content_audio_title span::before	{ content:""; padding-right:18px; font-weight:normal; background-position:center; background-position:right 4px center; background-repeat:no-repeat; }
			/* CONTENT AUDIO PLAYER */
		#content_audio 						{ display:none; justify-content:center; padding-bottom:6px; position:relative; }
		#content_audio > div > div			{ text-align:center; font-weight:bold;}
		#audio_container					{ padding:0; height:32px; display:flex; background-color:rgb(241, 243, 244); flex-direction:row; }
		#prev_track, #next_track			{ width:2rem; padding:0; display:inline-block; overflow:auto; background-image:${ SVG_UI_Icon("prev_next_track") }; background-position:center; background-repeat:no-repeat; }
		#prev_track							{ transform:rotate(180deg) !important; }
		#audio								{ height:32px; }
		audio::-webkit-media-controls-panel { padding:0; }
		audio::-webkit-media-controls-enclosure { border-radius:0; }
		#close_audio						{ width:32px; padding:0; position:relative; display:inline-block; background-image:${ SVG_UI_Icon("multiply") }; background-position:center; background-repeat:no-repeat; background-size:14px; }
		#audio_options						{ margin-top:0; margin-right:calc(-6em - 8px); padding:0 4px; width:6em; display:flex; flex-direction:column; justify-content:center; }
		#loop_label input					{ margin:0px 4px 2px}
		#shuffle_label input				{ margin:2px 4px 0px}
		#audio_iframe						{ margin:0; padding:0; border:0; }
			/* CUE SHEET MENU */
		.cue_sheet_track_list_container 	{ display:none; width:32px; background-image:${ SVG_UI_Icon("menu") }; background-position:center; background-repeat:no-repeat; background-size:13px; }
		.cue_sheet_track_list 				{ display:none; position:absolute; width:100%; margin:0; padding:0; left:0; right:0; z-index:1;}
		#cue_sheet_track_list_container_audio .cue_sheet_track_list 	{ top:33px; border-top:solid 7px transparent; }
		.cue_sheet_track_list_container:hover .cue_sheet_track_list 	{ display:block; }
		.cue_sheet_track 					{ list-style:none; display:grid; grid-gap:0; grid-template-columns:minmax(4em,6em) minmax(25%,75%) minmax(25%,75%) minmax(6em,8em); }
		.cue_sheet_track.header 			{ font-weight:bold; cursor:default; }
		.cue_sheet_track:not(.header):hover { font-weight:bold; cursor:pointer; }
		.cue_sheet_track.selected 			{ font-weight:bold; }
		.cue_sheet_track.selected .cue_track_id::before					{ content:""; width:16px; height:8px; display:inline-block; }
		.cue_sheet_track span				{ padding:4px 8px; font-variant-numeric:tabular-nums; }
		.cue_sheet_track span.cue_track_id	{ text-align:right; }
		.cue_sheet_track span.cue_index		{ text-align:right; }
		#cue_sheet_background				{ position:absolute; top:0; right:0; bottom:0; left:0; z-index:-1; }
		#cue_sheet_title 					{ display:block; padding:4px 8px; font-variant-numeric:tabular-nums; text-align:center; }
			/* CONTENT TITLE PLAYLIST ENTRY (#content_playlist and #content_audio_playlist) */
		.playlist_entry_container 			{ display:none; padding:4px 6px; text-align:center; flex-direction:row; }
		.playlist_entry_container textarea	{ width:100%; padding:0 6px; border:0; resize:vertical; }
			/***** CONTENT_CONTAINER *****/
		#content_container			{ box-sizing:border-box; justify-content:center; padding:0; position:relative; bottom:0; overflow:auto; width:100%; background-position:center; background-repeat:no-repeat; background-size: 50%; display:flex; flex-basis:100%; contain:strict; }
		.content 					{ display:none; overflow:scroll; width:100%; height:100% }
			/* CONTENT GRID (div) */
		#content_grid				{ display:none; position:absolute; padding:0; width:100%; font-size:1rem; grid-gap:0; grid-template-columns:repeat(auto-fill, minmax(${ ( $settings.grid_image_size + 16) }px, auto)); grid-auto-rows:minmax(min-content, max-content); }
		#content_grid::after		{ content:""; width:1px; position:absolute; top:0; right:0; bottom:0; }
		#content_grid a				{ display:block; }
			/* IMAGE GRID ITEMS */
		.image_grid_item			{ padding:6px; grid-column:auto; display:flex; align-items:center; justify-content:center; line-height:0; }
		.image_grid_item img		{ width:auto; max-width:${ ($settings.grid_image_size).toString() }px; max-height:${ ($settings.grid_image_size) }px; position:relative; }
		.image_grid_item img[src$=".svg"]	{ width: 100%; height:100%; }
			/* FONT GRID ITEMS */
		.font_grid_item				{ line-height:1; padding:8px 20px; grid-column: 1 / -1; }
		.font_grid_item p			{ margin:0; padding:0 0 6px 0; line-height:1; font-size:1rem; letter-spacing:0.1em; text-indent:0.1em; }
		.font_grid_item h2			{ margin:0; font-weight:normal; font-size:${ $settings.grid_font_size * 4 }em; }
		.image_grid_item + .font_grid_item { margin-top:-1px; }
			/* CONTENT FONT.content */
		#content_font				{ hyphens:none; padding:0; position:relative; font-size:${ $settings.grid_font_size }em; overflow-wrap:break-word; }
		#font_specimen				{ max-width:100%; display:none; line-height:1.2; flex-direction:column; }
		#specimen					{ padding: 20px; font-size:4em; word-break:break-all; line-height:1.2; }
		#specimen_2					{ margin:0; font-weight:normal; font-size:8em; overflow:hidden; text-overflow:ellipsis; white-space:pre; }
		#specimen_2H4				{ margin:0; font-weight:normal; font-size:1.618em; overflow:hidden; text-overflow:ellipsis; }
		#specimen_3					{ margin:0; font-weight:normal; font-size:6em; text-align:justify; overflow:hidden; text-overflow:ellipsis; white-space:pre; }
		#specimen_3H3				{ margin:0; font-size:2em; hyphens:auto; }
		#specimen_string_2			{ padding:20px; text-align:justify; hyphens:auto; }
		#specimen_string_3			{ padding:20px; text-align:justify; }
		.lorem						{ text-align:justify; hyphens:auto; font-size:1em; line-height:1.4; column-gap:1.5em; overflow-wrap:normal; word-break:normal; }
		#lorem						{ padding:20px 20px 0; }
		#lorem::first-line			{ letter-spacing:0.1em; text-indent:0.1em; font-size:${ $settings.grid_font_size * 1.33 }em; font-variant:small-caps; }
		#lorem_2					{ padding:12px 20px 0; columns:2; }
		#lorem_3					{ padding:12px 20px 40px; columns:3; }
			/* FONT GLYPHS */
		#font_viewer				{ display:none; position:relative; font-family:unset; width:100%; }
		#content_pane[data-content="has_font_file"] #font_viewer	{ overflow-y:auto; }
		#content_pane[data-content="has_glyph"] #font_viewer 		{ overflow:auto; }
		#content_pane[data-content="has_glyph"] #glyphs_container 	{ visibility:hidden; }
		#glyphs_container			{ padding:0; position:relative; text-align:center; display:grid; grid-gap:0; grid-template-columns:repeat(auto-fill, minmax(120px,auto)); }
		.glyph_container			{ padding:0; position:relative; }
		.glyph_info					{ padding:2px; position:absolute; right:0; bottom:0; left:0; font-size:0.75rem; }
		#glyph_viewer				{ display:none; padding:0; z-index:1; position:absolute; top:0; right:0; bottom:0; left:0; background-color:#FFF; background-position:center; background-repeat:no-repeat; background-size:contain; }
		#glyph_viewer_info			{ padding:4px 6px; position:fixed; right:0; left:0; text-align:center; height:18px; line-height:1.6; font-size:0.875rem; }
		#content_font svg			{ width: 100%; }
		#save_svg_hidden			{ float:left; visibility:hidden; }
		#glyph_viewer_info div		{ padding:0; display:inline-block; }
		#glyph_viewer_info div::before { content:"Glyph "; }
		#save_svg					{ float:right; }
		#font_info					{ max-height:${ (window.innerHeight * 0.75) }px; font-size:0.875rem; position:fixed; bottom:0; z-index:2; }
		#font_info:hover			{ box-shadow:0px 4px 6px 3px #333; }
		#font_info th				{ padding:4px 6px 5px; letter-spacing:0.1em; text-indent:0.1em; }
		#font_info_body				{ display:none; max-height:${ ((window.innerHeight * 0.75) - 64) }px; font-size:0.875rem; overflow:auto; }
		.font_info_name				{ padding:4px 6px; text-align:right; font-weight:bold; width:33%; }
		.font_info_value			{ padding:4px 6px; width_66%; }
		.font_info_value a			{ font-weight:bold; }
			/* CONTENT TEXT EDITOR */
		#content_text				{ display:none; width:100%; max-width:100%; height:100%; overflow:hidden; padding:0; position:absolute; z-index:1; flex-direction:column; }
			/* CONTENT IMAGE.content */
		#content_image_container	{ display:none; margin:0; padding:2rem 2.5rem; position:relative; overflow:auto; box-sizing:border-box; }
		#content_image				{ margin:auto; width:auto; max-width:100%; max-height:100%; position:relative; object-fit:contain; cursor:zoom-in; }
		#content_pane.has_zoom_image #content_image_container			{ padding:0; }
			/* OTHER CONTENT ELEMENTS */
		#content_pdf				{ height:100%; padding:0; position:relative; width:100%; }
		#content_video				{ padding:0; position:absolute; background:transparent; }
		#content_iframe				{ display:none; width:100%; height:100%; padding:0; position:relative; background:white; border:0; }
		#content_iframe_utility		{ display:none; }
			/* WARNING STYLES */
		${ $warning_styles }
			/* HELP STYLES */
		#help_container						{ display:none; padding: 0 1em 1em; overflow:scroll; position:absolute; top:0; right:0; bottom:0; left:0; z-index:9998; contain:strict; }
		#help_container header				{ font-size:0.875rem; text-align:center; margin-right:calc(-1em - 2px); margin-left:calc(-1em - 2px); }
		#help_container header > span		{ display:inline-block; padding:6px; font-weight:bold; }
		#help_container tr					{ display:flex !important; border-bottom:solid 1px #666; }
		#help_container td					{ vertical-align:top; }
		#help_container dd					{ margin-inline-start:1em; }
		#help_container dd:before			{ content:"\u2219"; margin-right:6px; }
		#content_help						{ margin:1em auto; width:auto; overflow:auto; }
		#close_help							{ float:right; margin-left:-100% !important; margin:4px 6px; }
		#content_help tbody					{ font-size:0.875rem; padding:8px; overflow:auto; }
		#content_help td.kbd_shortcut		{ text-align:right; width:33%; padding:4px 9px 4px 6px; }
		#content_help td.help_description	{ width:66%; padding:4px 6px 4px 12px; }
		#content_help kbd					{ display:inline-block; min-width:1em; margin:2px; padding:2px 6px; border:solid 1px #888; border-radius: 3px; text-align:center; font-family:inherit; font-size:0.875em; }
			/* HANDLE & OVERLAY */
		#handle												{ position:absolute; top:0; bottom:0; z-index:1; cursor:col-resize; right:-4px; width:7px; }
		body.has_overlay #handle							{ z-index:9999; }
		body.has_warning::before, body.has_overlay::before	{ content:""; position:fixed; top:0; right:0; bottom:0; left:0; z-index:9998;-webkit-user-select:none;-moz-user-select:none; user-select:none; }
	`;
	var $color_and_background_styles = // added to #top and #iframe_body
			`/* BACKGROUND COLORS */
		/* body.theme_light	.background_color_A0_20					{ background-color: #A0A0A0; } */
		/* body.theme_dark	.background_color_A0_20						{ background-color: #202020; } */
		body.theme_light .background_color_B0_30, body.theme_light		{ background-color: #B0B0B0; }
		body.theme_dark  .background_color_B0_30, body.theme_dark		{ background-color: #303030; }
		body.theme_light .background_color_C0_40						{ background-color: #C0C0C0; }
		body.theme_dark	 .background_color_C0_40						{ background-color: #404040; }
		body.theme_light .background_color_D0_50						{ background-color: #D0D0D0; }
		body.theme_dark	 .background_color_D0_50						{ background-color: #505050; }
		body.theme_light .background_color_E0_60						{ background-color: #E0E0E0 !important; }
		body.theme_dark	 .background_color_E0_60						{ background-color: #606060 !important; }
		body.theme_light .background_color_DD_44						{ background-color: #DDDDDD; }
		body.theme_dark	 .background_color_DD_44						{ background-color: #383838; }

		body.theme_light .background_color_DD_33,
		body.editor_theme_light .background_color_DD_33,
		body.theme_light.editor_theme_default .background_color_DD_33  { background-color: #DDDDDD; }

		body.theme_dark .background_color_DD_33,
		body.editor_theme_dark .background_color_DD_33,
		body.theme_dark.editor_theme_default .background_color_DD_33 { background-color: #333333; }

		body.theme_light .background_color_EE_22,
		body.editor_theme_light .background_color_DD_33:focus,
		body.theme_light.editor_theme_default  .background_color_DD_33:focus,
		body.theme_light #content_container:hover,
		body.theme_light #content_grid::after
																		{ background-color: #EEEEEE; }

		body.theme_dark	.background_color_EE_22,
		body.editor_theme_dark .background_color_DD_33:focus,
		body.theme_dark #content_container:hover,
		body.theme_dark #content_grid::after
																		{ background-color: #222222; }

		body.theme_light	.background_color_FF_11						{ background-color: #EFEFEF; }
		body.theme_dark	.background_color_FF_11							{ background-color: #0F0F0F; }
		body.theme_light	.background_color_EE_22:hover, body.theme_light	.background_color_EE_22.hovered, body.theme_light	.background_color_EE_22.selected	{ background-color: #FFFFFF; }
		body.theme_dark	.background_color_EE_22:hover, body.theme_dark	.background_color_EE_22.hovered, body.theme_dark	.background_color_EE_22.selected		{ background-color: #000000; }
		body.theme_light	.background_color_22_EE						{ background-color: #222222; }
		body.theme_dark	.background_color_22_EE							{ background-color: #EEEEEE; }
		body.theme_light	.background_color_11_FF, body.theme_light	.background_color_22_EE:hover, body.theme_light .background_color_22_EE.hovered { background-color: #0F0F0F; }
		body.theme_dark	.background_color_11_FF, body.theme_dark .background_color_22_EE:hover, body.theme_dark	.background_color_22_EE.hovered { background-color: #EFEFEF; }
			/* DIR LIST ROWS: .alternate_background */
		body.theme_dark.alternate_background	#tbody tr:nth-of-type(odd), body.theme_dark.alternate_background .cue_sheet_track:not(.header):nth-of-type(odd)		{ background-color: #505050; }
		body.theme_light.alternate_background	#tbody tr:nth-of-type(odd), body.theme_light.alternate_background .cue_sheet_track:not(.header):nth-of-type(odd)	{ background-color: #D0D0D0; }
		body.theme_dark.alternate_background	#tbody tr:nth-of-type(even), body.theme_dark.alternate_background .cue_sheet_track:not(.header):nth-of-type(even)	{ background-color: #404040; }
		body.theme_light.alternate_background	#tbody tr:nth-of-type(even), body.theme_light.alternate_background .cue_sheet_track:not(.header):nth-of-type(even)	{ background-color: #E8E8E8; }
		body.theme_dark	#content_help tr:nth-of-type(even)				{ background-color: #484848; }
		body.theme_light	#content_help tr:nth-of-type(even)			{ background-color: #CCCCCC; }
			/* NON-MEDIA ROWS .selected, .loaded, :hover ("light cyan") */
		body.theme_light:not(.has_stats) tr:not(.media).selected,	body.theme_light:not(.has_stats) tr.content_loaded:not(video), body.theme_light:not(.has_stats) tr.content_loaded:not(.video):hover,	body.theme_light #menu li.selected
																		{ background-color: rgba(172,202,235,1.00) !important; }
		body.theme_light:not(.has_stats) tr.content_loaded:not(.video),	body.theme_light:not(.has_stats) #tbody tr:not(.media):hover, body.theme_light.alternate_background:not(.has_stats) #tbody tr:not(.media):hover, body.theme_light tr:not(.media).hovered
																		{ background-color: rgba(172,202,235,0.60) !important; }
		body.theme_dark:not(.has_stats) tr:not(.media).selected, body.theme_dark:not(.has_stats) tr.content_loaded:not(.video), body.theme_dark:not(.has_stats) tr.selected.content_loaded:not(.video):hover, body.theme_dark #menu li.selected
																		{ background-color: rgba(101,140,179,0.80) !important; } /* #658CB3 */
		body.theme_dark:not(.has_stats) tr:not(.video).content_loaded, body.theme_dark:not(.has_stats) #tbody tr:not(.media):hover, body.theme_dark.alternate_background:not(.has_stats) #tbody tr:not(.media):hover, body.theme_dark tr:not(.media).hovered
																		{ background-color: rgba(101,140,179,0.60) !important; }
			/* MEDIA ROWS .audio_loaded, .video.content_loaded, .selected, :hover */
		body.theme_light:not(.has_stats) tr.media[class*="_loaded"], body.theme_light .cue_sheet_track.selected	{ background-color: rgba(130,196,196,1) !important; } /* #82C4C4 */
		body.theme_light:not(.has_stats) tr.media.selected:not([class*="_loaded"]),	body.theme_light tr.media.hovered, body.theme_light .cue_sheet_track:not(.header):hover
																		{ background-color: rgba(116,190,190,0.60) !important; }
		body.theme_light:not(.has_stats) tr.media:not([class*="_loaded"]):hover			{ background-color: rgba(116,190,190,0.40) !important; }
		body.theme_dark:not(.has_stats) tr.media[class*="_loaded"], body.theme_dark .cue_sheet_track.selected	{ background-color: rgba(076,143,143,0.75) !important; }
		body.theme_dark:not(.has_stats) tr.media.selected:not([class*="_loaded"]),	body.theme_dark tr.media.hovered, body.theme_dark .cue_sheet_track:not(.header):hover
																		{ background-color: rgba(076,143,143,0.55) !important; }
		body.theme_dark:not(.has_stats)	tr.media:hover					{ background-color: rgba(076,143,143,0.45) !important; }
			/* text editor row ("purple") */
		body.theme_light #text_editor_row.has_text_editor, body.theme_light.edited #text_editor_row		{ background-color: rgba(160,160,230,1.00); } /* #A0A0E6 */
		body.theme_dark #text_editor_row.has_text_editor,	body.theme_dark.edited #text_editor_row		{ background-color: rgba(100,100,160,1.00); } /* #6464A0 */
			/* menu items :hover, with exceptions for default text editor view */
		body.theme_dark  .menu li:hover, body.theme_dark .menu li#preview_text_menu_item span:hover		{ background-color: #686868; }
		body.theme_light .menu li:hover, body.theme_light .menu li#preview_text_menu_item span:hover	{ background-color: #B8B8B8; }
		#preview_text_menu_item:hover		{ background-color: initial; }
			/* BACKGROUND IMAGES */
		.has_background, .has_background_before::before, .has_background_after::after	{ background-repeat:no-repeat; background-position:center; background-color:transparent !important; }
		body.theme_light .bookmark > a::before											{ background-image: ${ SVG_UI_Icon("bookmark") }; }
		body.theme_dark .bookmark > a::before											{ background-image: ${ SVG_UI_Icon("bookmark_dark") }; }
		body.theme_light li.has_submenu													{ background-image: ${ SVG_UI_Icon("arrow") }; }
		body.theme_dark li.has_submenu													{ background-image: ${ SVG_UI_Icon("arrow_dark") }; }
		.background_color_check_mark::before, #theme::before, body.sort_by_default #default span::before, body.sort_by_name #name span::before, body.sort_by_time #time span::before, body.sort_by_size #size span::before, body.sort_by_date #date span::before, body.sort_by_kind #kind span::before, body.sort_by_ext #ext span::before, body.alternate_background #alternate_background span::before, body.show_numbers #show_numbers span::before, body.autoload_media #autoload_media span::before, body.autoload_index_files #autoload_index_files span::before, body.play_all_media #play_all_media span::before, body.split_view #split_view_menu_item, body.split_view #split_view span::before, body.source_text #source_text::before, body.preview_text #preview_text::before, body.sort_by_default #sort_by_default span::before, body.loop_media #loop_media_menu::before, body.shuffle_media #shuffle_media_menu::before, body.sort_by_name #sort_by_name span::before, body.sort_by_time #sort_by_time span::before, body.sort_by_size #sort_by_size span::before, body.sort_by_date #sort_by_date span::before, body.sort_by_kind #sort_by_kind span::before, body.sort_by_ext #sort_by_ext span::before, body.hide_ignored_items #hide_ignored_items span::before, body.ignore_ignored_items #ignore_ignored_items span::before, body.editor_theme_default #editor_theme_default::before, body.editor_theme_light #editor_theme_light::before, body.editor_theme_dark #editor_theme_dark::before, #enable_text_editing::before, body.source_text #source_text::before, body.preview_text #preview_text::before, body.preview_html #preview_html::before, .cue_sheet_track.selected .cue_track_id::before
		{ background-image:${ SVG_UI_Icon("check_mark") }; }
		body.sort_by_default #sort_by_default span::after, body.sort_by_name #sort_by_name span::after, body.sort_by_time #sort_by_time span::after, body.sort_by_size #sort_by_size span::after, body.sort_by_date #sort_by_date span::after, body.sort_by_kind #sort_by_kind span::after, body.sort_by_ext #sort_by_ext span::after	{ background-image: ${ SVG_UI_Icon("chevron_down") }; }
		#parent_dir_nav a																{ background-image: ${ SVG_UI_Icon("chevron_up") }; }
		body.theme_light #content_pane[data-content="has_ignored"] #content_container	{ background-image: ${ SVG_UI_Icon("ignored") }; background-size:25%; }
		body.theme_dark #content_pane[data-content="has_ignored"] #content_container	{ background-image: ${ SVG_UI_Icon("ignored_dark") }; background-size:25%; }
		body.has_audio #content_pane:not([data-content^="has_"]):not([data-loaded="unloaded"]) #content_container
		{ background-image:${ SVG_UI_Icon("music") }; }
		body.is_error #content_container												{ background-image: ${ SVG_UI_Icon("error") }; }
			${ CSS_UI_Icon_Rules() }
		body.theme_light #grid_btn:not(.has_grid), body.theme_light #grid_btn:not(.has_grid) .menu	{ background-image:${ SVG_UI_Icon("grid") }; }
		body.theme_dark #grid_btn:not(.has_grid), body.theme_dark #grid_btn:not(.has_grid) .menu	{ background-image:${ SVG_UI_Icon("grid_dark") }; }
		body.theme_light #grid_btn.has_grid, body.theme_light #grid_btn.has_grid .menu	{ background-image: ${ SVG_UI_Icon("grid_loaded") }; }
		body.theme_dark #grid_btn.has_grid, body.theme_dark #grid_btn.has_grid .menu	{ background-image: ${ SVG_UI_Icon("grid_loaded_dark") }; }
		#current_dir_path span::before													{ background-image: ${ SVG_UI_File_Icon("file_icon_dir") }; float:none; display:inline-block; margin:0 0 -2px 0; width:24px; }
		body.has_playlist #current_dir_path span::before								{ background-image: ${ SVG_UI_File_Icon("file_icon_playlist") }; float:none; display:inline-block; margin:0 0 -2px 0; width:24px; }
		body.is_error #current_dir_path span::before									{ background-image: ${ SVG_UI_Icon("error") }; float:none; display:inline-block; margin:0 0 -2px 0; width:24px; }
		#content_pane[data-content="has_text_editor"] #title span::before				{ background-image: ${ SVG_UI_File_Icon("file_icon_markdown") }; }
		#content_pane[data-content="has_font_file"] #title span::before					{ background-image: ${ SVG_UI_File_Icon("file_icon_font") }; }
		#content_audio_title span::before												{ background-image: ${ SVG_UI_File_Icon("file_icon_audio") }; height:14px !important; }
		#content_pane[data-content="has_grid"] #title span::before						{ background-image: ${ SVG_UI_File_Icon("file_icon_dir") }; height:14px !important; }
		#content_pane[data-content="has_view_directory_source"] #title span::before		{ background-image: ${ SVG_UI_File_Icon("file_icon_dir_default") }; height:14px !important;background-size:contain;}
		#dir_list tr.ignored.local a.icon span::after									{ content: "\\00a0[local file]"; display:contents; font-style:italic; }
			/* BORDERS */
			{ border-top:solid 1px #666 !important; font-weight:bold; }
		body.theme_dark		.border_all		{ border:			solid 1px #111; }
		body.theme_light	.border_all		{ border:			solid 1px #666; }
		body.theme_dark		.border_top		{ border-top:		solid 1px #111; }
		body.theme_light	.border_top		{ border-top:		solid 1px #666; }
		body.theme_dark		.border_right	{ border-right:		solid 1px #111; }
		body.theme_light	.border_right	{ border-right:		solid 1px #666; }
		body.theme_dark		.border_bottom	{ border-bottom:	solid 1px #111; }
		body.theme_light	.border_bottom	{ border-bottom:	solid 1px #666; }
		body.theme_dark		.border_left	{ border-left:		solid 1px #111; }
		body.theme_light	.border_left	{ border-left:		solid 1px #666; }
		.border_top_x						{ border-top:		solid 1px #666; } /* "x" = inverted for theme_dark */
		.border_right_x						{ border-right:		solid 1px #666; }
		.border_bottom_x					{ border-bottom:	solid 1px #666; }
		.border_left_x 						{ border-left:		solid 1px #666; }
		.split_btn::after					{ border-left:		solid 1px #333; }
			/* TEXT COLORS */
		body.theme_light a.text_color_111:hover,	body.theme_light .text_color_111.selected,	body.theme_light .selected .text_color_111 			{ color: #000; }
		body.theme_dark	a.text_color_111:hover, 	body.theme_dark .text_color_111.selected,	body.theme_dark .selected .text_color_111 			{ color: #FFF; }
		body.theme_light .text_color_111, 	body.editor_theme_light #content_text .text_color_111,	body.theme_light #help_container,	body.theme_light #help_container a	{ color: #111; }
		body.theme_dark	.text_color_111,	body.editor_theme_dark	#content_text .text_color_111,	body.theme_dark #help_container,	body.theme_dark  #help_container a	{ color: #EEE; }
		body.theme_light .text_color_333 							{ color: #333; }
		body.theme_dark	.text_color_333 							{ color: #CCC; }
		body.theme_light.ignore_ignored_items .ignored, body.theme_light.ignore_ignored_items .ignored a	{ color: #555 !important; }
		body.theme_dark.ignore_ignored_items .ignored, body.theme_dark.ignore_ignored_items .ignored a		{ color: #AAA !important; }`
		;
	var $conditional_styles = `
			/* PSEUDO-ELEMENTS */
		#content_pane[data-content="has_image"] #title span::after				{ content: attr(data-after); }
		#content_pane[data-content="has_font"] #title::before					{ content: "Font:" }
		#content_pane[data-content="has_font_file"] #title::before				{ content: "Glyphs from font:" }
		body.has_directory_source #title::before								{ content: "Source of: " }
		#content_pane[data-content="has_grid"] #title::before					{ content: "Fonts and Images from:"; }
		#content_pane[data-content="has_grid"].has_font_grid #title::before		{ content: "Fonts from:"; }
		#content_pane[data-content="has_grid"].has_image_grid #title::before	{ content: "Images from:"; }
		#content_pane[data-content="has_grid"] #title::after					{ content: "${ current_dir }"; }
		#content_pane[data-content="has_ignored"] #title::before				{ content: "Ignored content:"; }
		#content_pane[data-content="has_dir"] #title::before 					{ content: "Index of:"; }
		#content_pane[data-loaded="unloaded"] #content_container				{ background-image:${SVG_UI_Icon("spinner")}; background-repeat:no-repeat; background-position:center;background-size:32px;}
		body #sidebar_title div:before											{ content: "INDEX OF"; }
		body.has_playlist #sidebar_title div:before								{ content: "PLAYLIST"; }
		body.has_filelist #sidebar_title div:before								{ content: "FILELIST"; }
		#content_pane.has_audio #content_audio_title span::before, body #content_pane[data-content="has_video"] #title::before
																				{ content: "Playing: "; }
		#reload_btn.reset::before, #content_pane.has_zoom_image #reload_btn::before, #content_pane.has_scaled_image #reload_btn::before			{ content: "Reset"; }
		#content_pane[data-content="has_text_editor"] #close_btn::before								{ content: "Hide"; }
		#content_pane[data-content="has_text_editor"] #title span::after								{ content: "Text Editor"; }
		#content_pane[data-content="has_text_editor"].edited #title span::after							{ content: "Text Editor (edited)"; }
		body.source_text:not(.split_view) #content_pane[data-content="has_text_editor"] #title::after	{ content: " (Source Text)"; }
		body.preview_text:not(.split_view) #content_pane[data-content="has_text_editor"] #title::after	{ content: " (Text Preview)"; }
		body.preview_html:not(.split_view) #content_pane[data-content="has_text_editor"] #title::after	{ content: " (HTML Preview)"; }
		body.edited #text_editor_row a:after, body.iframe_edited:not(.has_text_editor) #content_pane.has_iframe #title::after
																				{ content: " (edited)"; }
		body.theme_light #theme span::before									{ content: "Light "; }
		body.theme_dark #theme span::before										{ content: "Dark "; }
		body.show_details #show::before											{ content: "Hide "; }
		#disable::after															{ content: "Enabled"; }
		body:not(.enable_text_editing) #disable::after							{ content: "Disabled"; }
		#disable::after															{ content: "Enabled"; }
		body.is_error #sidebar_header_body										{ border-bottom:0; }
		body.is_error #title span::before										{ content:"ERROR"; width:auto; }
		#stats_details span.ignored::before,#stats_details span.invisible::before		{ content:"("; }
		#stats_details span.ignored::after,#stats_details span.invisible::after			{ content:")"; }
			/* DISPLAY */
		body.hide_sidebar #handle, body.has_playlist #stats_summary, body.has_filelist #stats_summary, body.has_stats #footer_links, body.has_playlist #footer_links, body.has_filelist #footer_links, body.has_playlist #sidebar_buttons label, body.has_filelist #sidebar_buttons label, body.is_error #sidebar_header_body > div:not(:first-of-type), body.is_error #tfoot, body.is_non_local #show_invisibles_container, tr.invisible, tr.ignored, body.hide_ignored_items #tbody tr.ignored, body.hide_ignored_items #tbody tr.ignored, body.hide_ignored_items:not(.show_invisibles) #tbody tr.ignored.invisible, body.hide_ignored_items:not(.show_invisibles) #tbody tr.ignored.invisible, body:not(.show_invisibles) #tbody tr.invisible, body:not(.has_media) #time, #close_playlist_container
																				{ display:none; }
		body.has_media #play_toggle, .media .tbody_row_cell_name_a_span input, body.theme_dark #theme_dark, body.theme_light #theme_light, body.show_details .tbody_row_cell_details, #content_pane[class^="has_"] #close_btn, #content_pane[data-content="has_text_editor"] #close_btn
																				{ display:unset; }
		#font_info:hover #font_info_body										{ display:table-row-group; }
		body.has_playlist #stats_summary_playlist_files, body.has_filelist #stats_summary_playlist_files, body.has_help #help_container
																				{ display:table-row; }
		body.has_images #grid_btn, body.has_fonts #grid_btn						{ display:table-cell; }
		body.has_menu #menu, body.has_menu_parents #parents_links, #sidebar_menus .has_submenu:hover .submenu, #menu .has_submenu.hovered .submenu, #footer_links:hover ul, body.has_images.has_fonts #grid_btn:hover ul.menu, #content_pane[data-content="has_font_file"] #font_viewer, #content_pane[data-content="has_glyph"] #font_viewer, #tfoot tr, body.has_warning #overlay_container, .cue_sheet_track_list_container.has_cue_sheet, body.has_playlist #close_playlist_container, body.has_filelist #close_playlist_container
																				{ display:block; }
		body.show_details #dir_list td.details, body.show_numbers .tbody_row_cell_name_a::before, #content_pane[data-content="has_grid"] .split_btn, #content_pane[data-content="has_image"] .split_btn, #content_pane[data-content="has_font"] .split_btn, #content_pane[data-content="has_font_file"] #title_buttons_left .split_btn, #content_pane[data-content="has_glyph"] #title_buttons_right .split_btn
																				{ display:inline-block; }
		#tbody tr:not(.ignored):not(.invisible), body.show_invisibles #tbody tr.invisible, body.has_stats #tbody tr.invisible, body.has_stats #tbody tr.ignored, body.has_stats #tbody tr.ignored.hovered, body.hide_ignored_items.has_stats #tbody tr.ignored, body:not(.hide_ignored_items) #tbody tr.ignored:not(.invisible)
																				{ display:grid; }
		body.show_details #sorting_row_2, body.show_details #text_editor_row, #text_editor_row.has_text_editor, #content_pane.has_audio #content_audio_title, #content_pane.has_audio #content_audio, .playlist_entry_container.has_content, #content_pane .content.has_content:not(#content_iframe), #content_pane[data-loaded="loaded"] #content_iframe, #content_pane[data-content="has_text_editor"] #content_text, #content_pane[data-content="has_font"] #font_specimen, #content_pane[data-content="has_image"] #content_container, #content_pane[data-content="has_image"] #content_image_container, #content_pane[data-content="has_video"] #content_container, body.has_playlist #close_playlist_btn_container, body.has_filelist #close_playlist_btn_container
																				{ display:flex; }
		#content_pane[data-content="has_text_editor"] .content.has_content, #content_pane[data-content="has_text_editor"] #content_grid, #content_pane[data-content="has_grid"] #content_text, #content_pane[data-content="has_grid"] .content.has_content
																				{ display:none !important; }
		body.theme_dark .invert, body.theme_dark #menu li > span::before, body.theme_dark #sorting span::before, body.theme_dark #sorting span::after
																				{ filter:invert(1); }
		#content_pane[data-content="has_ignored"]::before						{ opacity:0.3; }
		body.has_warning #sidebar_wrapper, body.has_warning #content_pane, #close_audio:hover::after, body.has_menu_parents #tbody, body.has_menu #tbody, body.faded:not(.has_stats) #tbody tr:not(.hovered), body.has_stats:not(.faded) #tbody tr:not(.hovered), #parent_dir_menu:not(:hover), #menu_container:not(:hover) nav, #hide_sidebar, #grid_btn, #dir_list.has_dir:not(:hover), #footer_links, .split_btn span, .disabled, body.focus_content #tbody tr:not(.hovered)
																				{ opacity: 0.6; }
		#grid_btn:hover, #prev_next_btns span:hover, #hide_sidebar:hover, #grid_btn:hover, #footer_links:hover, .split_btn span:hover
																				{ opacity: 1.0; }
			/* HAS HIDDEN SIDEBAR */
		body.hide_sidebar #hide_sidebar									{ left:2px; transform:rotate(180deg); }
		body.hide_sidebar #sidebar_wrapper								{ width:0 !important; min-width:0; position:absolute; top:2px; left:-1px; }
		body.hide_sidebar #sidebar_header									{ z-index:unset; display:none; }
		body.hide_sidebar #sidebar										{ visibility:hidden; } /* allows hidden sidebar to still be navigated by arrows */
		body.hide_sidebar #dir_list										{ min-width:0; }
		body.hide_sidebar #content_pane									{ width:100% !important; }
		body.hide_sidebar #title_buttons_left								{ padding-left:24px; }
			/* HAS GRID */
		#content_pane[data-content="has_grid"] #content_grid					{ display: grid; }
		#content_pane.has_hidden_grid #content_grid								{ max-height:100%; display:grid; overflow:hidden; }
			/* HAS ZOOM IMAGE */
		#content_pane.has_scaled_image #content_image_container					{ display:grid; padding:0; }
		#content_pane.has_zoom_image #content_image								{ width:unset; max-width:unset; max-height:unset; cursor: zoom-out; }
			/* FIGURE OUT HOW TO DELETE THESE: */
		#content_pane[data-content="has_image"] #title_buttons_left, #content_pane[data-content="has_image"] #title_buttons_right, #content_pane[data-content="has_grid"] #title_buttons_left, #content_pane[data-content="has_grid"] #title_buttons_right, #content_pane[data-content^="has_font"] #title_buttons_left, #content_pane[data-content^="has_font"] #title_buttons_right, #content_pane[data-content^="has_glyph"] #title_buttons_right 					{ min-width: 9.5em; }
	`;
	var $text_editor_styles = `
		html, body, #iframe_body					{ margin:0; padding:0; height:100%; position:relative; font-family:${ $settings.UI_font }; font-size: ${ $settings.UI_font_size }; }
		button.focus, button:focus 							{ outline:none; border-radius:3px !important; border-style:solid !important; border-width:1px !important; border-color:#222 !important; }
		#iframe_body								{ display:flex; flex-direction:column; position:relative; overflow:hidden; }
		#iframe_body #content_text					{ display:flex; height:100%; padding:0; position:absolute; z-index:1; width:100%; overflow:hidden; flex-direction:column; }
		body.editor_theme_dark	.border_right		{ border-right:	solid 1px #111; }
		.editor_theme_light .border_right			{ border-right:	solid 1px #666; }
		body.editor_theme_dark	.border_bottom		{ border-bottom: solid 1px #111; }
		.editor_theme_light .border_bottom			{ border-bottom: solid 1px #666; }
		ul.has_popout_menu, .editor_theme_light #toolbar ul.has_popout_menu				{ background-color:#C0C0C0; border:solid 1px #666; }
		ul.has_popout_menu link						{ background-color:#D0D0D0; }
		ul.has_popout_menu li:hover					{ background-color:#E0E0E0; }
		body.editor_theme_dark #toolbar ul.has_popout_menu li 	{ background-color:#C0C0C0; }
		${ $warning_styles }
			/* TOOLBAR */
		#toolbar									{ width:100%; background:#C0C0C0; position:relative; z-index:100; border-bottom: solid 1px #999; border-collapse:collapse; font-family:${ $settings.UI_font }; font-size:${ parseFloat($settings.UI_font_size) * 0.875 + $settings.UI_font_size.replace(/\d*/,'') }; -webkit-user-select: none; -moz-user-select: none; user-select:none; position:relative; }
		#toolbar td									{ padding:2px 0 0; }
		#toolbar_buttons							{ margin:0; padding:0; list-style:none; }
		.toolbar_icon								{ margin:0 4px; padding:4px; width:16px; height:16px; float:left; background-size:14px; background-repeat:no-repeat; background-position:center; cursor:pointer; display:block; opacity:0.6; color:#444; }
		#editor_theme								{ background-image:${ SVG_Text_Editing_UI_Icon("toggle_theme") }; }
		#toggle_source_text							{ background-image:${ SVG_Text_Editing_UI_Icon("show_markdown") }; background-size:18px; }
		#toggle_preview_text						{ background-image:${ SVG_Text_Editing_UI_Icon("show_preview") }; }
		#toggle_preview_html						{ background-image:${ SVG_Text_Editing_UI_Icon("show_html") }; background-size:20px; }
		#toggle_split_view							{ background-image:${ SVG_Text_Editing_UI_Icon("toggle_split") }; }
		#sync_scroll								{ padding:4px; float:left; opacity:1 !important; }
		#sync_scroll input							{ float:left; }
		#sync_scroll label							{ width:8em; display:block; font-size:inherit; line-height:1.5; }
		#save_btn									{ margin:0; padding:4px 4px 4px 8px; width:20px; height:16px; float:right; position:relative; z-index:9997; background-repeat:no-repeat; background-position:center right 7px; background-image:${ SVG_Text_Editing_UI_Icon("save_btn") }; background-size:16px; cursor:pointer; outline:none; }
		#save_btn ul								{ display:none; margin:0; padding:0 32px 0 0; position:absolute; top:-4px; right:-2px; list-style:none; box-shadow:0px 4px 6px -3px #333; background-repeat:no-repeat; background-position:right 8px top 7px; background-image:${ SVG_Text_Editing_UI_Icon("save_btn") }; background-size:16px; background-color:#C0C0C0; }
		.edited #save_btn, .edited #save_btn ul		{ background-image:${ SVG_Text_Editing_UI_Icon("save_btn_edited") }; }
		#save_btn ul li								{ margin:0; padding:4px 6px; text-align:right; width:100%; white-space:pre; box-sizing:border-box; }
		#save_btn a									{ font-weight:normal; }
		#save_btn:hover ul							{ display:block; }
		#save_btn li:hover							{ background-color:#DDDDDD !important; }
		body.editor_theme_dark #save_btn ul			{ border-color:#EEE; box-shadow:0px 4px 6px -3px #EEE;}
		body.editor_theme_dark #save_btn li			{ border-color:#EEE; color:#111; background-color:#AEAEAE !important; }
		body.editor_theme_dark #save_btn li:hover	{ background-color:#989898 !important; }
		body.editor_theme_dark #save_text			{ border-color:#EEE; color:#111; }
		#clear_text									{ margin:0 4px; padding:4px; height:16px; float:right; cursor:pointer; }
		#toolbar li:hover, body.source_text #toggle_source_text, body.preview_text:not(.source_text) #toggle_preview_text, body.preview_html:not(.source_text) #toggle_preview_html, .split_view #toggle_split_view, .edited #save_btn
													{ opacity:1; }
			/* TEXT CONTENT CONTAINERS */
		#text_container								{ display:flex; flex-grow:1; overflow:hidden; }
		#text_source, #text_preview, #html_preview	{ margin:0; padding:1em; display:none; width:100%; height:100%; overflow-y:scroll; box-sizing:border-box; z-index:1; line-height:1.2; font-size:${ parseFloat($settings.UI_font_size) + $settings.UI_font_size.replace(/\d*/,'') };  }
		#text_source								{ border:0; border-right-width:1px; resize:none; font-family:monospace; }
		#html_preview								{ white-space:pre-wrap; word-break:break-word; font-family:monospace; }
			/* TEXT SOURCE */
		#text_source:focus, #text_preview:focus, #html_preview:focus		{ outline:none; }
		#text_source:focus						  	{ box-shadow: inset 0 0 4px #666; }
		body.editor_theme_dark #text_source:focus, body.theme_dark.editor_theme_default #text_source:focus	{ box-shadow: inset 0 0 6px #000; }
			/* SPLIT VIEWS */
		.split_view #text_source, .split_view:not(.preview_html) #text_preview, .split_view.preview_html #html_preview	{ width:50%; display:block; }
		body.preview_text:not(.split_view):not(.preview_html) #text_preview, body.source_text:not(.split_view) #text_source, body.preview_html:not(.split_view) #html_preview
													{ display:block; }
		body.source_text.preview_text:not(.split_view) #text_preview, body.source_text.preview_html:not(.split_view) #html_preview
													{ display:none !important; }
			/* TEXT PREVIEW */
		body.editor_theme_dark #toolbar, body.theme_dark.editor_theme_default #toolbar				{ background: #404040; color:#EEEEEE; border-bottom: solid 1px #111; }
		body.editor_theme_dark #toolbar .has_background:not(#save_btn), body.editor_theme_dark:not(.edited) #save_btn, body.editor_theme_dark.edited #save_btn li,
		body.theme_dark.editor_theme_default #toolbar .has_background:not(#save_btn), body.theme_dark.editor_theme_default:not(.edited) #save_btn, body.theme_dark.editor_theme_default.edited #save_btn li
													{ filter: invert(1); }
		body.theme_light.editor_theme_default .background_color_DD_33, body.editor_theme_light .background_color_DD_33 { background-color: #DDDDDD; }
		body.editor_theme_dark .background_color_DD_33, body.theme_dark.editor_theme_default .background_color_DD_33 { background-color: #333333; }
		body.theme_light.editor_theme_default .background_color_EE_22, body.editor_theme_light .background_color_DD_33:focus, body.theme_light #content_container:hover, body.theme_light #content_grid::after, body.editor_theme_light #text_source, #text_preview table th
													{ background-color: #EEEEEE; }
		body.theme_dark.editor_theme_default .background_color_EE_22, body.editor_theme_dark .background_color_DD_33:focus, body.theme_dark.editor_theme_default .background_color_DD_33:focus, body.theme_dark	#content_container:hover, body.theme_dark #content_grid::after, body.editor_theme_dark #text_source, body.theme_dark.editor_theme_default #text_source
													{ background-color: #222222; }
			/* custom previewed text styles */
		#text_preview pre							{ border:solid 1px #CCC; border-radius:3px; white-space:pre-wrap; word-break:break-word; font-size:${ parseFloat($settings.UI_font_size) + $settings.UI_font_size.replace(/\d*/,'') }; }
		#text_preview th, #text_preview td			{ vertical-align:top; }
		#text_preview blockquote					{ margin-top:1em; margin-bottom:1em; color: #555; }
		#text_preview blockquote + blockquote		{ margin-top:0; }
		.markdown-body input[type="checkbox"]		{ margin-top:0.375em; margin-right:6px; float:left; }
		h1 .uplink,h2 .uplink,h3 .uplink,h4 .uplink,h5 .uplink,h6 .uplink
													{ display:inline-block; font-size:0.875em; transition: opacity 0.25s; opacity:0; cursor:pointer; margin:0; padding:0; }
		h1:hover .uplink,h2:hover .uplink,h3:hover .uplink,h4:hover .uplink,h5:hover .uplink,h6:hover .uplink
													{ transition: opacity 0.25s; opacity:0.5; }
		#text_preview table							{ font-size:inherit; }
		.markdown-body .highlight pre, .markdown-body pre { background-color:transparent; }
		.markdown-body::before, .markdown-body::after	{ display:none !important; background:transparent; }
			/* disabled text editing */
		li#save_btn div, .comment, #iframe_body.text_editing_disabled #toolbar, #iframe_body.text_editing_disabled #preview_text, #iframe_body.text_editing_disabled #text_editing_handle
																		{ display:none; }
		#iframe_body.text_editing_disabled #text_source.disabled		{ top:0; background:white; }
		#iframe_body.editor_theme_light	.background_color_D0_50, #iframe_body.theme_light.editor_theme_default .background_color_D0_50			{ background-color: #D0D0D0; }
		#iframe_body.editor_theme_dark .background_color_D0_50,  #iframe_body.theme_dark.editor_theme_default .background_color_D0_50			{ background-color: #505050; }
		#iframe_body.editor_theme_light	.background_color_E0_60, #iframe_body.theme_light.editor_theme_default .background_color_E0_60			{ background-color: #E0E0E0; }
		#iframe_body.editor_theme_dark .background_color_E0_60,  #iframe_body.theme_dark.editor_theme_default .background_color_E0_60			{ background-color: #606060; }
		#iframe_body.editor_theme_light .text_color_111, #iframe_body.editor_theme_light #content_text .text_color_111, #iframe_body.theme_light.editor_theme_default .text_color_111, #iframe_body.theme_light.editor_theme_default #content_text .text_color_111		{ color: #111; }
		#iframe_body.editor_theme_dark .text_color_111, #iframe_body.editor_theme_dark #content_text .text_color_111	{ color: #EEE; }
		#iframe_body.has_warning::after { content:""; position:absolute; top:0; right:0; bottom:0; left:0; background:rgba(0,0,0,0.33); z-index:9998; }
			/* TEXT EDITOR RESIZE HANDLE */
		#text_editing_handle											{ display:none; width:7px; position:absolute; top:0; bottom:0; left:calc(50% - 4px); cursor:col-resize; z-index:3; }
		#text_editing_handle::before									{ content:""; width:1px; background:#666; position:absolute; top:0; bottom:0; left:calc(50%); }
		#iframe_body.editor_theme_dark #text_editing_handle::before		{ background:#111; }
		.split_view #text_editing_handle								{ display:block; }
	`;
	var $iframe_dir_styles = `
		:root, html, body			{ margin:0; padding:0; width:100%; max-width:100%; height:100%; border:0; border-radius:0; font-family:${ $settings.UI_font }; font-size:${ $settings.UI_font_size }; hyphens:auto; overflow:hidden; }
		#iframe_body				{ width:100%; display:flex; flex-direction:column; font-size:${ (parseFloat($settings.UI_font_size) * 0.875) + $settings.UI_font_size.replace(/\d*/,'') }; }
		#iframe_body.theme_dark	{ background-color:#333; }
		a, a:hover					{ text-decoration: none !important; }
			/* IFRAME HEADER */
		#thead											{ flex-direction:row; font-size: 0.875rem; user-select:none; -webkit-user-select:none; }
		#change_dirs									{ display:flex; flex-direction:row; justify-content:space-between; white-space:pre; }
		#change_dirs a									{ padding-right:0 !important; padding-left:0 !important;}
		#change_dirs span:hover							{ font-weight:bold; }
		#parent											{ padding:5px 3px 5px 0; text-align:left; flex-grow:1; }
		#open_in_sidebar								{ padding:5px 0 5px 3px; text-align:right; flex-grow:1; }
		#parent a::before, #open_in_sidebar a::after	{ content:""; width:16px; height:10px; display:inline-block; }
		#open_in_sidebar a::after						{ background-image:${ SVG_UI_Icon('chevron_left') }; background-repeat: no-repeat; background-size:6px; background-position: center; }
		.theme_dark #parent a::before, .theme_dark #open_in_sidebar a::after		{ filter:invert(1); }
			/* IFRAME SORTING */
		#sorting_row_1 div, #sorting_row_2 div			{ flex-grow:1; padding:0; }
		#sorting_row_1									{ display:flex; cursor:pointer; justify-content:space-between; flex-direction:row; }
		#sorting_row_1 div								{ width:50%; }
		#sorting_row_2									{ overflow-x:scroll; }
		.sorting span									{ display:inline-block; padding:3px 0; }
		.sorting:hover span								{ font-weight:bold; }
		.sorting span::before, .sorting span::after		{ content:""; width:16px; height:8px; display:inline-block; position:relative; color:#CCC; background-repeat:no-repeat; background-position:center; background-size:10px; }
		.sorting.down span::after						{ transform:rotate(180deg) }
		.theme_dark .sorting span::before, .theme_dark .sorting span::after { filter:invert(1); }
		#sort_by_name, #sort_by_ext						{ text-align:left; }
		#sort_by_time, #sort_by_size, #sort_by_date, #sort_by_default, #sort_by_kind		{ text-align:right; }
		body:not(.has_media) #sort_by_time 				{ display:none; }
		body.sort_direction_up .sorting span::after		{ transform:rotate(180deg) !important; }
			/* IFRAME DIR LIST */
		#iframe_dir_list_wrapper						{ width:100%; height:100%; display:block; position:relative; overflow:scroll; margin-bottom:-1px; }
		#dir_list										{ width:100%; height:100%; line-height:1.5; position:relative; overflow:hidden; border-collapse:collapse; }
		#tbody											{ font-size:0.875rem; counter-reset:row; overflow:hidden; display:block; }
		#tbody tr, #sorting_row_2						{ display: grid; grid-gap:0; grid-template-columns: minmax(16em,100%) minmax(5.5em,6em) minmax(5.5em,14em) minmax(5.5em,6em); }
		.tbody_row_cell_details							{ white-space:pre; font-variant-numeric:tabular-nums; padding:3px 0; }
		.tbody_row_cell_name_a							{ padding:3px 0; }
		.tbody_row_cell_name_a::before					{ display:none; counter-increment:row; content:counter(row); width:36px; min-width:36px; height:14px; max-height:14px; min-height:14px; margin-top:2px; padding:0; float:left; text-align:right; font-variant-numeric:tabular-nums; }
		.show_numbers #tbody td.name a::before 			{ display:inline-block; }
		.tbody_row_cell_name_a_span						{ display:flex; padding:2px 0; word-break:break-word; }
		.tbody_row_cell_name_a_span input				{ margin:2px 6px 0 0; display:none; }
		.tbody_row_cell_details.name					{ grid-column:1; text-align:left; }
		.tbody_row_cell_details.size					{ grid-column:2; padding-right:12px; padding-left:0; text-align:right; }
		.tbody_row_cell_details.date					{ grid-column:3; padding-right:12px; padding-left:0; white-space:normal; overflow:hidden; max-height:1em; overflow-wrap:break-word; text-align:right; }
		.tbody_row_cell_details.date span				{ white-space:pre; display:inline-block; }
		.tbody_row_cell_details.kind					{ grid-column: 4; text-align:right; padding-right:12px; }
		.tbody_row_cell_details.kind::first-letter		{ text-transform:uppercase; }
		.tbody_row_cell_details.ext						{ display:none; }
		.tbody_row_cell_media_duration					{ display:none; padding:3px 12px 3px 0; font-variant-numeric:tabular-nums; }
		tr.media, body.has_media tr.media #sorting_row_2		{ grid-template-columns: minmax(24em,100%) minmax(4.5em,8em) minmax(5.5em,14em) minmax(5.5em,5.5em); }
		tr.media .tbody_row_cell_name_a_span input		{ display:inline-block; }
		body.has_media #tbody tr, body.has_media #sorting_row_2	{ grid-template-columns: minmax(16em,100%) minmax(4em,6em) minmax(5.5em,6em) minmax(5.5em,14em) minmax(4em,6em); }
		body.has_media .tbody_row_cell_media_duration	{ display:inline-block; grid-column: 2; text-align:right; }
		body.has_media .tbody_row_cell_details.size		{ grid-column: 3; }
		body.has_media .tbody_row_cell_details.date		{ grid-column: 4; }
		body.has_media .tbody_row_cell_details.kind		{ grid-column: 5; text-align:right; padding-right:12px; }
		body.has_media .tbody_row_cell_details.ext		{ display:none; }
		body.has_media tr:not(.media) .tbody_row_cell_name				{ grid-column: 1 / span 2; }
		body.has_media tr:not(.media) .tbody_row_cell_media_duration	{ display:none; }
		tr:hover .tbody_row_cell_name_a, tr.selected .tbody_row_cell_name_a, tr.media[class*="_loaded"] .tbody_row_cell_name_a	{ font-weight:bold; }
		body.ignore_ignored_items tr.ignored, body.ignore_ignored_items tr.ignored a						{ cursor:not-allowed; }
		tr.invisible, tr.ignored, body.hide_ignored_items #tbody tr.ignored, body.hide_ignored_items #tbody tr.ignored, body.hide_ignored_items:not(.show_invisibles) #tbody tr.ignored.invisible, body.hide_ignored_items:not(.show_invisibles) #tbody tr.ignored.invisible, body:not(.show_invisibles) #tbody tr.invisible	{ display:none !important; }
		body.show_invisibles tr.invisible, #tbody tr:not(.ignored):not(.invisible), body.show_invisibles #tbody tr.invisible, body.has_stats #tbody tr.invisible, body.has_stats #tbody tr.ignored, body.has_stats #tbody tr.ignored.hovered, body.hide_ignored_items.has_stats #tbody tr.ignored, body:not(.hide_ignored_items) #tbody tr.ignored:not(.invisible)
														{ display:grid !important; }
		#iframe_body.is_blurred #dir_list				{ opacity:0.75; }
		#iframe_body tr.is_blurred						{ background-color: rgba(172,202,235,0.66) !important; }
		${ CSS_UI_Icon_Rules() } /* background icons */
		.has_icon_before::before, .has_icon_before_before						{ content:""; display:block; float:left; max-width:28px; width:28px; min-width:28px; height:14px; max-height:14px; min-height:14px; margin-top:4px; background-position:center; background-repeat:no-repeat; background-size:14px; }
		#dir_list.sort_by_default #sort_by_default span::before, #dir_list.sort_by_name #sort_by_name span::before, #dir_list.sort_by_size #sort_by_size span::before, #dir_list.sort_by_date #sort_by_date span::before, #dir_list.sort_by_kind #sort_by_kind span::before, #dir_list.sort_by_ext #sort_by_ext span::before
														{ content:""; height:9px; background-image:${ SVG_UI_Icon("check_mark") }; background-repeat: no-repeat; background-size:10px; background-position: center; }
		#dir_list.sort_by_default #sort_by_default span::after, #dir_list.sort_by_name #sort_by_name span::after, #dir_list.sort_by_size #sort_by_size span::after, #dir_list.sort_by_date #sort_by_date span::after, #dir_list.sort_by_kind #sort_by_kind span::after, #dir_list.sort_by_ext #sort_by_ext span::after, #parent a::before
														{ background-image:${ SVG_UI_Icon("chevron_up") }; background-repeat: no-repeat; background-size:10px; background-position: center; }
		.sidebar #tbody tr								{ grid-template-columns: minmax(8em,100%) minmax(5.5em,6em) minmax(5.5em,6em) minmax(5.5em,6em); }
		.has_subdirectory .dir_list_subdir			{ display:block; grid-column:1/ span 4; grid-row:3; width:100%; border:0; }
		.tr[data-level] .tbody_row_cell_name_a::before { width:${ ( ( Number(getSearchParam("level") ) + 1) * 22 ) + 28 }px; }
	`;
	// Gecko (Firefos) Styles:
	const $gecko_style_rules = `
		.dir::before														{ content:"" !important; display:none !important; }
		body.is_gecko button												{ padding:revert; }
		body.is_gecko #grid_btn .menu										{ top:-7px; left:-120px; }
		body.is_gecko thead													{ font-size:100%; }
		body.is_gecko #dir_list .dir::before								{ position:absolute; }
		body.is_gecko #dir_list tr td.name span								{ display:-webkit-box; width:auto; white-space:normal; }
		tr.dir td:not(:first-child), tr.file td:not(:first-child)			{ width:unset !important; }
		body.is_gecko #dir_list tr td										{ min-width:calc(100% - 24px); }
		body.is_gecko .dir::before											{ content:"" !important; display:none !important; }
		body.is_gecko.use_default_icons:not(.is_converted_list) #dir_list .file .name .icon	{ padding-left:4px; background:none; }
		body.is_gecko.use_default_icons #dir_list .file .name .icon img		{ margin-right:6px; height:14px; }
		body.is_gecko #tbody > tr > td:not(:first-of-type)					{ float:left }
		body.is_gecko #content_audio_title span								{ padding-top: 6px;, padding-bottom: 0; }
		body.is_gecko #audio,body.is_gecko #audio_container 				{ background-color: rgba(26,26,26,1); }
		body.is_gecko #prev_track, body.is_gecko #next_track, body.is_gecko #close_audio	{ filter: invert(1); border:none !important; }
		body.is_gecko #content_pane.has_zoom_image #content_image_container	{ display:block !important;}
	`;
	const $safari_style_rules = `
		body.is_safari button { background-color: #FFF; }
		body.is_safari.theme_dark #prev_track, body.is_safari.theme_dark #next_track, body.is_safari.theme_dark #close_audio	{ filter: invert(1); }
	`;
	const $chrome_style_rules = `
		video::-webkit-media-controls-enclosure 					{ border-radius:0 !important; }
	`;
	// ADD STYLES
	function addStyles() {
		$('head').find('style, link[rel="stylesheet"], link[href$="css"]').remove(); // remove any existing stylesheets
		let default_styles = `
			<style id="main_styles">${ $main_styles }</style>
			<style id="conditional_styles">${ $conditional_styles }</style>
			<style id="color_and_background_styles">${ $color_and_background_styles }</style>
			<style id="font_styles"></style>
			<style id="font_grid_styles"></style>
		`;
		if ( getBrowser() === 'is_gecko' )	{ default_styles += `<style id="gecko_style_rules">${ $gecko_style_rules }</style>`; }
		if ( getBrowser() === 'is_safari' ) { default_styles += `<style id="safari_style_rules">${ $safari_style_rules }</style>`; }
		if ( getBrowser() === 'is_chrome' ) { default_styles += `<style id="chrome_style_rules">${ $chrome_style_rules }</style>`; }
		$('head').append( default_styles );
	}
	// ***** END STYLES ***** //

	// ***** INDEX PREP ***** //
	// Try to determine index type from parent directory link container, with fallbacks for indexes that don't have parent directories, or for parent directory links that aren't siblings or ancestors of the index itself.
	function getIndexType() {
		let title = $('title').html();
		let parent_link_parent, type; // Possible elements: pre, li, td, th, div -- used to determine index type
		// Try to find parent directory link:
		let parent_link = $('a:contains("Parent Directory"), a:contains("parent directory"), a[href="../"], a[href="/"], a[href^="?"], img[alt*="PARENTDIR"]');
		switch(true) {
			case parent_link.length === 0:
				parent_link_parent = document.querySelectorAll('body > ul li, body > pre, body > table:last-of-type tr td');
				break;
			default: parent_link_parent = parent_link.parent(); // use original found parent_link
		}
		// If no parent_link_parent found, type = error; else return parent node name
		let node_name = ( parent_link_parent[0] !== undefined ? parent_link_parent[0].nodeName.toLowerCase() : '');
		switch(true) {
			case ( /Error|404|Not Found/.test(title) ):
			case $protocol.startsWith('file'): if ( getBrowser() === 'is_gecko' ) { node_name = 'gecko'; } break;
		}
		let types = {'gecko':'gecko','li':'list','pre':'pre','th':'table','td':'table','div':'default','error':'error','permission_denied':'permission_denied'};
			type = types[node_name];
		return type;
	}
	// Return Index items, Index type, remove parent directory link, and add body class.
	function getIndexItems() {
		let type = getIndexType(), items;
		switch(type) {
			case 'gecko':	items = $('body').find('> table > tbody');	break;
			case 'list':	items = $('body').find('> ul');				break;
			case 'pre':		items = $('body').find('> pre').html();		break;
			case 'table' || 'td':
				switch(true) {
					case $('table > tbody').length === 1: items = $('body').find('table > tbody'); break;
					case $('table > tbody').length < 1: items = $('body').find('table'); // tables without tbody
				}
				items.find('tr th, tr td:contains(Parent Directory), a[href="../"], hr').parent('tr').remove();
				break;
			case 'default': items = $('body').find('> table').find('> tbody');	break;
			case 'error':	items = $('body').html();							break;
		}
		return [items,type];
	}
	// Index Prep: convert list type function
	function convertGeckoType(items) {
		let prepped_index = [];
		const rows = Array.from(items.find('> tr'));
		for ( let row of rows ) {
			let prepped_row = [], cellContents = '', cells = Array.from( $(row).find('> td') ), link = ($(cells).find('a').attr('href'));
			for ( let cell of cells ) {
				cellContents = cell.innerText;
				cellContents = ( cellContents !== undefined ? cellContents.trim() : '');
				prepped_row.push(cellContents);
			}
			prepped_row[1] = prepped_row[1].replace(/\s*KB/,'000'); // convert reported size in KB to total bytes
			prepped_row[2] = prepped_row[2] + ' '+ prepped_row[3];
			prepped_row = prepped_row.slice(1,-1);
			if ( link.length > 0 && link !== '/' && link !== '../' ) { prepped_row.unshift(link); }
			if ( prepped_row.length > 0 ) { prepped_index.push(prepped_row); }
		}
		return prepped_index;
	}
	// Index Prep: convert list type function
	function convertListType(items) {
		  let prepped_index = [];
		const rows = items[0].children;
		for ( let i = rows.length; i--; ) {
			let row = rows[i];
			if ( row.innerHTML.indexOf('Parent Directory') === -1 ) {
				let prepped_row = [];
				let link = $(row).find('a').attr('href');
				row = row.innerHTML.replace(/<a .+?<\/a>\s*/,'');
				let cells = row.split(' ');
				for ( let cell of cells ) {
					if ( cell.trim().length > 0 ) { prepped_row.push(cell); }
				}
				if ( link.length > 0 && link !== '/' && link !== '../' ) { prepped_row.unshift(link); }
				if ( prepped_row.length > 0 ) { prepped_index.push(prepped_row); }
			}
		}
		return prepped_index;
	}
	// Index Prep: convert pre type function
	function convertPreType(items) {
		let prepped_index = [];
		const spaces = /\s{2,}/;
		items = items.replace(/\[\s*?\]/g,'[]') // remove empty 'alt=[	 ]'
					 .replace(/\s*<(hr|img[^>])>\s*/g,'') // remove hr and images
					 .replace(/\s*<a href="[^>]+?>\s*Parent Directory\s*<\/a>\s*/g,'') // remove parent links
					 .replace(/\s*<a href="\?[^>]+?>[^<]+?<\/a>\s*/g,'') // remove sorting links (href beginning with "?")
					 .replace(/(<a [^>]+?>)[^<]+?<\/a>/g,'	$1</a>	') // remove link display text and add two spaces after
					 .replace(/(\%20){2,}/g,'\%20'); // remove extra spaces in hrefs
		const rows = items.split('\n'); // create array of rows from items
		for ( let i = rows.length; i--; ) {
			let row = rows[i];
			let prepped_row = [];
			let cells = row.split(spaces); // assumes pre-type only uses two or more spaces between "columns"
			let link;
			for ( let j = cells.length; j--; ) {
				let cell = cells[j];
				if ( cell.trim().length > 0 ) {
					if ( !cell.startsWith('<a ') ) { prepped_row.push(cell); } else { link = cell.split('"')[1]; } // extract link
				}
			}
			if ( link !== undefined ) { prepped_row.unshift(link); } // add link to front of prepped_row
			if ( prepped_row.length > 1 ) { prepped_index.push(prepped_row); } // add prepped row to index
		}
		return prepped_index;
	}
	// Index Prep: convert table type function
	function convertTableType(type,items) { // for local chrome indexes and server-generated table-type indexes
		  let prepped_index = [];
		const rows = items[0].children;
		for ( let i = rows.length; i--; ) {
			let row = rows[i], prepped_row = [], link, cell, cells = row.cells;
			for ( let j = cells.length; j--; ) {
				switch(true) {
					case cells[j].children[0] !== undefined && cells[j].children[0].nodeName === 'A':
						link = cells[j].children[0].attributes.href.value;
						break;
					case cells[j].innerHTML !== '&nbsp;' && cells[j].innerHTML.indexOf('<img') === -1:
						cell = cells[j].innerHTML.trim().replace(/^-$/m,'—');
						if ( cell.length > 0 ) { prepped_row.push( cell ); }
						break;
				}
			}
			if ( link !== undefined ) { prepped_row.unshift(link); }
			if ( prepped_row.length > 1 ) { prepped_index.push(prepped_row); } // prepped_row.length > 2 in order to omit parent directory row
		}
		return prepped_index;
	}
	// Convert Errot Type
	function convertErrorType(items) {
		$('body').addClass('is_error');
		items = '<div class="error border_bottom" data-kind="error">'+items+'</div>';
		return items;
	}
	// Create Playlist items
	function convertPlaylist(items) {
		let prepped_index = []; let prepped_row = []; let rows, type;
			items = items.replace(/\s*#EXTM3U.*\s*/g,'').replace(/^\*\n{2,}/gm,'\n').replace(/\.pdf\?.+?\n/g,'.pdf\n'); // remove header comment and multiple returns
		switch(true) { // determine playlist type;
			case ( /#EXTINF:/.test(items) ):	type = 'extm3u';	rows = items.split('#EXTINF:');	break; // rows made by splitting at "#EXTIMG:" prefix
			default:							type = 'm3u'; 		rows = items.split('\n');		break; // rows are just naked links
		}
		let rows_length = rows.length;
		for ( let i = 0; i < rows_length; i++ ) {
			let row = rows[i];
			switch(true) { // get entry information: title, link, etc.
				case type === 'extm3u':		row = row.trim().split('\n'); prepped_row = row[1]; break; // split row into info ( = row[0] ) and link, but we're only using the link anyway....
				case type === 'm3u':		prepped_row = row; break; // m3u with urls only
			}
			if ( row.length > 1 ) { prepped_index.push([prepped_row]); }
		}
		return prepped_index;
	}
	// Index Prep: convert rows and return array of rows, with link, size, date-modified
	function convertIndexItems(type,items) {
		let converted = [];
		switch(type) {
			case 'gecko':	converted = convertGeckoType(items);					break;
			case 'list':	converted = convertListType(items);						break;
			case 'pre':		converted = convertPreType(items);						break;
			case 'table': case 'default': converted = convertTableType(type,items);	break;
			case 'error':	converted = convertErrorType(items);					break;
		}
		return converted;
	}
	// INDEX PREP: Build new Index from prepped rows
	function buildNewIndex(id,prepped_index,sort,type) {
		let new_index_items = [], body_classes = new Set();
		let new_row, item, item_info = [], item_link, item_name, item_sort_name, item_size_and_date, item_size, item_sort_size, item_date, item_sort_date, item_ext, item_sort_kind, item_kind, item_classes;
		let name_span, cell_link, cell_name, cell_size, cell_date, cell_kind, cell_ext, cell_time, prepped_index_length = prepped_index.length, item_disabled;
		let stats_classes = [], stats_kinds = [];
		let parent_id = ( getSearchParam('parent_id') || '' ), connector = ( getSearchParam('parent_id') ? '_' : '' ), level = ( Number(getSearchParam('level')) || 0 ); // ensure unique ids for subdirectory items
		// add body classes according to index type
		switch(type) {
			case 'error':				body_classes.add('is_error');			break;
			case 'gecko':				body_classes.add('is_converted_gecko'); break;
			case 'list':				body_classes.add('is_converted_list');	break;
			case 'pre':					body_classes.add('is_converted_pre');	break;
			case 'table': case 'td':	body_classes.add('is_converted_table');	break;
			case 'default': 			body_classes.add('is_default');			break;
		}
		for ( let i = prepped_index_length; i--; ) {
			item 				= prepped_index[i];
			item_info			= getLinkInfo(item[0]); // = [link,name,ext,kind,item_classes,body_classes];
			item_link			= item_info[0].trim();
			item_name			= item_info[1].replace(/^\s/m,'\&nbsp;').replace(/^\//m,'').replace(/([-_——])/g,'$1<wbr>'); // prep display name, with word breaks added after unbreakable chars
			item_sort_name		= escapeStr( item_info[1].toLocaleLowerCase() );
			item_size_and_date 	= getItemSizeAndDate(item);
			item_size			= item_size_and_date[0];
			item_sort_size		= item_size_and_date[1];
			item_date			= item_size_and_date[2];
			item_sort_date		= item_size_and_date[3];
			item_ext			= item_info[2];
			item_kind			= item_info[3];
			item_sort_kind		= item_info[3];
			item_classes		= item_info[4];
			item_disabled		= ( item_classes.indexOf('local') > -1 || type === 'gecko' ? ' disabled="disabled"' : '' );
			// Assemble row elements
			name_span	= `<span class="has_icon_before_before"></span><span class="tbody_row_cell_name_a_span"><input type="checkbox" tabindex="-1" checked="true" ${ item_disabled } autocomplete="off" /> ${ item_name }</span>`;
			cell_link	= `<a href="${ item_link }" class="icon tbody_row_cell_name_a text_color_111">${ name_span }</a>`;
			cell_name	= `<td class="tbody_row_cell tbody_row_cell_name name" data-name="${ item_sort_name.split("/")[0] }">${ cell_link }</td>`;
			cell_time 	= `<td class="tbody_row_cell tbody_row_cell_media_duration" data-time=""></span>`;
			cell_size	= `<td class="tbody_row_cell_details size details" data-size="${ item_sort_size }">${ item_size }</td>`;
			cell_date	= `<td class="tbody_row_cell_details date details" data-date="${ item_sort_date }">${ item_date }</td>`;
			cell_kind	= `<td class="tbody_row_cell_details kind details" data-kind="${ item_sort_kind }">${ item_kind }</td>`;
			cell_ext	= `<td class="tbody_row_cell_details ext details" data-ext="${ item_ext }"></td>`;
			// Assemble row
			new_row	= `<tr id="${ parent_id }${ connector }rowid-${ (prepped_index.length - i) }" class="${ item_classes }" data-kind="${ item_sort_kind }" data-ext="${ item_ext }" data-level="${ level }" style="padding-left:${ Number(level) * 22 }px;">${ cell_name } ${ cell_time } ${ cell_size } ${ cell_date } ${ cell_kind } ${ cell_ext }</tr>`;

			new_index_items.push($(new_row)[0]);
			body_classes.add(item_info[5].join(' '));

			if ( ( item_sort_kind === 'audio' || item_sort_kind === 'video' ) && item_classes.indexOf('local') === -1 ) { // get media file duration
				getMediaDuration( item_link, function( duration ) { // what to do when duration is returned...
					// display duration
					let query_str = window.location.href;
					if ( query_str.indexOf('subdirectory') > -1 ) { // send data to top for subdirectories
						sendMessage('top','set_media_duration','',['#'+ parent_id + connector +'rowid-'+ ( prepped_index.length - i),duration]);
					} else {
						setMediaDuration('#'+ parent_id + connector +'rowid-'+ ( prepped_index.length - i),duration);
					}
					if ( getSearchParam('sort_by') === 'time' ) {
						let time_sort = sortDirList($('#tbody').find('tr'), 'sort_by_time', 1); // sort directory again when durations are returned
						$('#tbody').empty().html(time_sort);
					}
				});
			}
			stats_kinds.push(item_kind);
			stats_classes.push(item_classes); // add item classes for stats
		}
		let stats = buildStats(stats_classes,stats_kinds);
		// Sort items
		if ( sort === undefined ) { sort = getSearchParam('sort_by'); } // get sorting pref
		let sort_direction = ( getSearchParam('sort_direction') === 'down' ? 'sort_direction_down' : 'sort_direction_up' ); // get sort direction
		let sorted_index_items = sortDirList($(new_index_items), 'sort_by_'+ sort, sort_direction); // make initial sort
		return [sorted_index_items, Array.from(body_classes).join(' '),stats];
	}
	function setMediaDuration(id,duration) {
		$(id).find('td.tbody_row_cell_media_duration').attr('data-time',duration).text( duration ); // add time to details
		if ( duration.toString().startsWith('Error') ) { $(id).addClass('ignored').find('input').attr('disabled','disabled'); } // on error, disable track
	}
	// GET CONTENT SRC LINK, NAME, KIND, and EXT
	function getLinkInfo(link) {
		if ( link === undefined) { return; }
		if ( link.startsWith('/') ) { link = 'file://'+ link; }
		let URL = newURL(decodeURIComponentSafe(encodeURIComponent(link)));
		let prepped_link, name, kind, ext, item_classes = [], body_classes = [];
		switch(true) {
			case $protocol !== 'file:': // non-local pages
				switch(true) {
					case URL.protocol === 'file:': case URL.protocol === undefined:
						prepped_link = link; item_classes.push('local','ignored'); break;
					default: prepped_link = URL.href; // non-local pages
				}
				break;
			default: // local pages;
				switch(true) {
					case URL.protocol !== 'file:': prepped_link = URL.href; break;
					default: prepped_link = URL.pathname;
				}
		}
		switch(true) {
			case URL.pathname.endsWith('/'):
				name = URL.pathname.split('/').reverse()[1] + '/';
				switch(true) {
					case name.endsWith('.app') || name.endsWith('.app/') || name.endsWith('.exe'): // apps
						ext = 'app'; kind = ext;
						if ( $settings.apps_as_dirs === false ) { item_classes.sort().unshift('file','app'); } else { item_classes.sort().unshift('dir','app'); }
						break;
					default: kind = 'dir'; ext = 'dir'; // dirs
						item_classes.unshift(kind);
				}
				if ( name.startsWith('.') ) { item_classes.push('invisible'); }
				break;
			default: // files
				name = prepped_link.trim().split('/').reverse()[0];
				switch(true) {
					case name.toLowerCase().endsWith('symlink'):	ext = 'symlink';			break;
					case !/\./.test(name):							ext = name.toLowerCase();	break; // if no '.' in link (typical for bin files), ...
					default: // find the last . and get the remaining characters
						ext = name.toLowerCase().slice(name.toLowerCase().lastIndexOf('.') + 1);
						for ( let item_kind in $item_kind ) { if ( $item_kind[item_kind].includes( ext ) ) { kind = item_kind; } } // kind = types
						if ( /url|url\/|webloc|webloc\//.test(ext) ) { kind = 'link'; } // links
						switch(true) {
							case kind === 'audio': item_classes.push('media'); body_classes.push('has_media','has_audio');	break;
							case kind === 'video': item_classes.push('media'); body_classes.push('has_media','has_video');	break;
							case kind === 'font' : body_classes.push('has_fonts'); 											break;
							case kind === 'image': body_classes.push('has_images'); 										break;
						}
						if ( $row_settings.ignored.includes( ext ) )	{ item_classes.push('ignored'); }
						if ( name.startsWith('.') ) 					{ item_classes.push('invisible'); }
				}
				if ( kind === undefined ) { kind = 'other'; } item_classes = item_classes.sort(); item_classes.unshift(kind); item_classes.unshift('file');
		}
		if ( ext === undefined ) { ext = ''; }
		if ( name.endsWith('symlink') || name.endsWith('alias') || name.endsWith('symbolic link') ) { item_classes.push('alias'); }
		for ( let item_kind_system of $item_kind.system ) { if ( name.endsWith(item_kind_system) ) { item_classes.push('ignored'); } } // ignore various system items
		item_classes = Array.from(new Set(item_classes)).join(' '); // remove dupe classes
		return [decodeURIComponentSafe(encodeURIComponent(prepped_link)),decodeURIComponentSafe(name),ext,kind,item_classes,body_classes];
	}
	// Index Prep: get formatted row size and date
	function getItemSizeAndDate(cells) {
		let item_size_and_date = [], row_display_size, item_sort_size, row_display_date, item_sort_date, size_units = /[BYTES|B|K|KB|MB|GB|TB|PB|EB|ZB|YB]/;
		if ( cells.length > 1 ) {
			if ( cells[1].search(/[-:\/]/) !== -1 ) { // test for typical date/time separators.
				row_display_date = cells[1]; row_display_size = cells[2];
			} else {
				row_display_date = cells[2]; row_display_size = cells[1];
			}
		}
		// size
		if ( /undefined|—|-|,/.test(row_display_size) || row_display_size === '' ) { // if size is undefined, empty, or punctuation
			row_display_size = '&mdash;'; item_sort_size = '0'; // if no size supplied, use these defaults
		} else {
			item_sort_size = getItemSortSize(row_display_size);
			if ( !row_display_size.toUpperCase().match(size_units) ) { // if provided size is only numeric
				row_display_size = formatBytes(row_display_size,1); // format byte size
			} else {
				row_display_size = row_display_size.replace('K','k').replace(/(\d+)\s*([A-z])/,'$1 $2'); // ensure display size has space between number and units
			}
		}
		// date
		if ( [undefined,'','-'].includes(row_display_date) ) { row_display_date = '&mdash;'; item_sort_date = '0'; } else { item_sort_date = getItemDate(row_display_date); }
		row_display_date = row_display_date.replace(/, (.+)/,'<span>, $1</span>'); // add spans for short date display
		item_size_and_date.push( row_display_size, item_sort_size, row_display_date, item_sort_date );
		return item_size_and_date;
	}
	// Index Prep: get row size for sorting
	function getItemSortSize(val) {
		let sort_size, values = val.replace(/(\d+)\s*([A-z]+)/,'$1 $2').split(' '), size = values[0], unit = values[1];
		const factor = { '':1, B:1, K:1000, KB:1000, M:1000000, MB:1000000, G:1000000000, GB:1000000000, T:1000000000000, TB:1000000000000, P:1000000000000000, PB:1000000000000000, E:1000000000000000000, EB:1000000000000000000, Z:1000000000000000000000, ZB:1000000000000000000000 }; // unit to file size
		if ( unit !== undefined ) { unit = unit.toUpperCase(); }
		sort_size = size * factor[unit]; // convert byte size to multiplication factor
		return sort_size;
	}
	// convert numeric sizes to display format
	function formatBytes(val, decimals) {
		if (val === 0) return '0 Bytes';
		const k = 1024, dm = (decimals < 0 ? 0 : decimals), sizes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'], i = Math.floor(Math.log(val) / Math.log(k));
		return parseFloat((val / Math.pow(k, i)).toFixed(dm)) +' '+ sizes[i];
	}
	// process date
	function processDate(match,p1,p2,p3) { //date formats: 2017-10-09 13:12 || 2015-07-25T02:02:57.000Z || 12-Mon-2017 21:11
		const mo = 'JanFebMarAprMayJunJulAugSepOctNovDec'.indexOf(p2)/3 + 1; // e.g., convert month into number, or use number
		return p3 +'-'+ mo +'-'+ p1;
	}
	// Index Prep: get row date 2015-07-25T02:22:00.000Z
	function getItemDate(val) {
		let sort_date = val.replace(/^(\d{2})-(\w{3})-(\d{4})/m, processDate) // convert Month to number
						  .replace(/\b(\d{1})[-:/]/g,'0$1/') // add leading 0 for single digit numbers
						  .replace(/(\d{2})\/(\d{2})\/(\d{2}),/,'$3$1$2') // reorder MM/DD/YY dates
						  .replace(/-|:|\s+|\//g,''); // remove spacing characters
		return sort_date;
	}
	// Stats
	function buildStats(stats_classes,stats_kinds) {
			stats_classes.sort();
		let total = stats_classes.length, counts = [], kinds = [], stats_rows = [], total_dirs_invisible = 0, total_files_invisible = 0;
		for ( let i = 0; i < total; i++ ) { // get key/value pairs for item_classes/total counts
			counts[stats_classes[i]] = 1 + ( counts[stats_classes[i]] || 0 );
			if ( /invisible|ignored/.test(stats_classes[i]) ) {
				if ( /dir/.test(stats_classes[i]) ) { total_dirs_invisible++; }
				if ( /file/.test(stats_classes[i]) ) { total_files_invisible++; }
			}
		}
		for ( let i = 0; i < stats_kinds.length; i++ ) { kinds[stats_kinds[i]] = 1 + ( kinds[stats_kinds[i]] || 0 ); } // get key/value pairs for item kinds/counts
		let total_dirs = ( kinds.dir || 0 );
		let total_files = ( total - total_dirs );
		for ( let count in counts ) { // assemble stats row for each kind of item
			let kinds_items = count.split(' '), stats_row_kinds = '';
				kinds_items.forEach( item => stats_row_kinds += (`<span class="${ item }">${ item }</span>`));
			let stats_row = `<tr class="${ count }"><td class="tbody_row_cell tbody_row_cell_name name stats_count"><a class="icon tbody_row_cell_name_a text_color_111" data-count="${ counts[count] }"><span class="tbody_row_cell_name_a_span has_icon_before stats_kind">${ stats_row_kinds }</span></a></td></tr>`;
				stats_rows.push(stats_row);
		}
		let stats = `<div id="stats_container"><table id="stats"><thead id="stats_summary" class="background_color_C0_40 text_color_111">     <tr><th colspan="2">${ total } Items: ${ total_dirs } Directories, ${ total_files } Files</th></tr></thead>     <thead id="stats_summary_detailed_container" class="border_bottom background_color_C0_40 text_color_111">     <tr id="stats_summary_detailed_total" class="summary_detailed border_bottom">     <th colspan="2">${ total } Items (${ total_dirs_invisible + total_files_invisible } ignored or invisible)</th></tr>     <tr id="stats_summary_detailed_dirs" class="dir summary_detailed background_color_D0_50">     <td class="tbody_row_cell tbody_row_cell_name name stats_count"><a class="icon tbody_row_cell_name_a text_color_111" data-count="${ total_dirs }"><span class="tbody_row_cell_name_a_span has_icon_before stats_kind">Dirs (${ total_dirs_invisible } ignored or invisible)</span></a></td></tr>     <tr id="stats_summary_detailed_files" class="file summary_detailed background_color_D0_50">     <td class="tbody_row_cell tbody_row_cell_name name stats_count"><a class="icon tbody_row_cell_name_a text_color_111" data-count="${ total_files }"><span class="tbody_row_cell_name_a_span has_icon_before stats_kind">Files (${ total_files_invisible } ignored or invisible)</span></a></td></tr></thead>     <tbody id="stats_details_container">     <tr><td><table id="stats_details"><tbody>     ${ stats_rows.join('\n') }     </tbody></td></tr>     </tbody></table></div>`;
	return stats;
	}
	function updateStats() {
		let items = document.getElementById('tbody').getElementsByTagName('tr');
		let stats_classes = [], stats_kinds = [], item_classlist;
		for ( let i= 0; i < items.length; i++ ) { // get classes and kind for each item
			item_classlist = items[i].className;
			item_classlist = item_classlist.replace(/file|media|content_loaded|has_subdirectory|selected/g,'').trim(); // remove unwanted classes
			stats_classes.push(item_classlist);
			stats_kinds.push(items[i].getAttribute('data-kind') );
		}
		$('#stats_container').remove();
		$('#tfoot').prepend( buildStats(stats_classes,stats_kinds) );
	}
	// END INDEX PREP
	// ***** MAKE NEW INDEX ***** //
	function makeNewIndex(el,sort) {
		const index_items = getIndexItems(el), items = index_items[0], type = index_items[1];
		const converted_index = convertIndexItems( type, items ); // = array of rows: ["link","date","size"]
		switch(type) {
			case 'error': return [converted_index];
			default: { let new_index = buildNewIndex( $(el).attr('id'), converted_index, sort, type ); return [new_index]; }
		}
	}
	// ***** END DIR_LIST SETUP ***** //
	const $body = $('body');

	// ***** UI SETUP ***** //
	function prepDocHead() {
		document.title = 'Index of: '+ current_location; // change the doc title to current location
//		$('head').prepend('<meta charset="utf-8"><base href="'+ window.location.origin  +'">');// .find('#title').removeAttr('id');
		if ( window.location.protocol.startsWith('file') ) {  // add custom favicon for local directories
			$('head').prepend('<link href="data:image/png;base64,' + SVG_UI_File_Icon('favicon') +'" rel="icon" sizes="16x16" />');
		}
		addStyles(); // add css
	}
	// UI Setup: build UI and add body classes and other initial settings
	function getUIPrefBodyClasses() {
		let queries = new URLSearchParams(window.location.search).entries(); // make new search params from window.location.search
			queries = Object.fromEntries(queries);
		let body_classes = [], settings = Object.assign({},queries,$settings); // merge $settings and query settings
		for ( let key in settings ) {
			switch(true) {
				case ['bookmarks','grid_font_size','grid_image_size','UI_font','UI_font_size'].includes(key):
					break;  // ignore these keys (values are set in css or by setUpTextEditorUI)
				case ['default_text_view'].includes(key):
					body_classes.push( getSearchParam(key) );
					break;
				case ['theme','editor_theme','sort_by','sort_direction'].includes(key): // non-boolean prefs: add key_value to body classes
					body_classes.push( key +'_'+ getSearchParam(key) );
					break;
				case getSearchParam(key) === 'true': // booleans: only add the key to body classes
					body_classes.push(key);
					break;
				}
		}
		body_classes.push(getBrowser()); body_classes.push('is_'+getOS()); // add browser and os classes
		return body_classes.join(' ');
	}
	// Build UI: Append all assembled elements to $body
	function buildUI() {
		switch(true) {
			case window.self === window.top: { // if it's not an iframe...
				const make_new_index = makeNewIndex('body')[0]; // make index
				const new_index = make_new_index[0];
				const body_classes = make_new_index[1] +' '+ getUIPrefBodyClasses();

				$main_content.find('#tbody').append(new_index); // append index to #main_content el
				$main_content.find('#tfoot').prepend(make_new_index[2]); // append stats
				$('body').empty();
				prepDocHead(); // add styles, title, favicon, meta tags
				$('body').addClass(body_classes).attr('id','top').attr('lang','en').append($main_content); // add body classes, id, lang attr, and append the main content
				initMedia(); // initialize media
				autoLoadFile(); // autoload media and cover art, if any
				break;
				}
			case window.self !== window.top && !window.location.pathname.endsWith('.pdf'):
				setUpIframeUI();
				break;
		}
	}
	buildUI();
	// SET UI TO DEFAULT SETTINGS: remove queries;
	function defaultSettings() {
		let query_str = '';
		if ( getSearchParam('selected') !== undefined ) { query_str += 'selected='+ getSearchParam('selected'); }
		if ( getSearchParam('history') !== undefined ) { query_str += 'history='+ getSearchParam('history'); }
		if ( query_str.length > 0 ) { query_str = '?' + query_str.replace(/\s/g,'+'); }
		window.location.assign(current_location + query_str);
	}
	$('#default_settings').on('click', function(e) {
		e.preventDefault(); e.stopPropagation();
		$('body').removeClass('has_menu');
		if (window.confirm( 'Are you sure you want to remove all your temporary UI settings from the URL query string?' ) ) { defaultSettings(); }
	});
	// SAVE USER SETTINGS
	function saveSettings(file_name, data) { saveFile(data,'application/json',file_name); }
	$('#export_settings').on('click',function(e) {
		e.preventDefault(); e.stopPropagation();
		$('body').removeClass('has_menu');
		const settings_string = ( JSON.stringify($settings,null,'\t'));
		saveSettings('settings.json',settings_string);
	});
	// Show/Close Help
	function showHelp() { $('body#top').addClass('has_help'); }
	$('#show_help').on('click','span', function(e) { e.stopPropagation(); showHelp(); });
	$('#close_help').on('click', function(e) { e.preventDefault(); $('body').removeClass('has_help'); });
	$('#help_container').on('click', function(e) { e.stopPropagation(); });
	// Click Menu Bookmark (with warning)
	function setLocation(link) { window.location = link; }
	$('#parent_dir_nav, #parents_dir_nav + .menu, #menu .bookmark').on('click','a', function(e) {
		e.preventDefault();
		switch(true) {
			case $(this).attr('href').indexOf('file://') > -1 && $protocol !== 'file:':
				$body.addClass('has_warning').find('#warnings_container').addClass('warning_local_bookmark'); $('#warning_btn_ok').focus(); break;
			case $body.hasClass('has_playlist'): case $body.hasClass('has_filelist'): closePlaylist(); break;
			default: showWarning( 'setLocation', $(this).attr('href') );
		}
	});
	// Show Menus
	function showMenus(el) {
		sendMessage('iframe','top_has_menu');
		$('body').removeClass('hide_sidebar');
		let position = $(el).position(), id = $(el).attr('id');
		if ( $('body').hasClass('has_stats') ) { $('#stats').click(); }
		$(el).find('> ul').css({'top':position.top + $(el).innerHeight() + 1 + 'px'});
		switch(id) {
			case 'parents_dir_menu':
				switch(true) {
					case $('body').hasClass('has_menu_parents'): $('body').removeClass('has_menu_parents'); break;
					default:  $('body').addClass('has_menu_parents').removeClass('has_menu');
				}
				break;
			case 'menu_container':
				switch(true) {
					case $('body').hasClass('has_menu'): $('body').removeClass('has_menu'); sendMessage('iframe','top_closed_menu'); break;
					default: $('body').addClass('has_menu').removeClass('has_menu_parents'); sendMessage('iframe','top_has_menu');
				}
		}
	}
	$('#parents_dir_menu, #menu_container').on('click',function(e) { e.stopPropagation(); showMenus($(this)); });
	// Click menu
	function clickMenu() {
		$('#menu').find('.selected:not(.hovered)').removeClass('selected').find('a,> span,label').click();
		$('#menu').find('.hovered').removeClass('selected hovered');
		$('body').removeClass('has_menu');
		if ( $('body').hasClass('focus_content') ) { sendMessage('iframe','close_menu'); $('#content_iframe').focus(); }
		if ( $body.hasClass('focus_content') ) { focusContent(); }
	}
	// Close menus
	function closeMenus() {
		switch(true) {
			case !$('body').hasClass('has_menu') && !$('body').hasClass('has_menu_parents') && !$('body').hasClass('has_stats'): break;
			default:
				$('body').removeClass('has_menu has_menu_parents faded has_stats has_help');
				$('#menu').find('.selected,.hovered').removeClass('selected hovered');
		}
	}
	// Show Stats
	function showStats() {
		$('body').addClass('has_stats').removeClass('has_menu has_menu_parents');
		$('#stats_details').css({'height':$('#stats_container').height() - $('#stats_summary_detailed_container').height() - 4 });
	}
	$('#tfoot').on('click','#stats_summary', function(e) { e.stopPropagation(); showStats(); });
	$(document).on('click', function(e) { e.stopPropagation(); closeMenus(); });

	// Toggle UI Preferences: after clicking .toggle_UI_pref items (menu, buttons, etc.)
	function toggleUIpref(pref_ID) {
		let message_target = ( window.self === window.top ? 'iframe' : 'top' ), sorted, sort_direction;
		switch(true) {
			case ( /sort_by_name|sort_by_default|sort_by_time|sort_by_size|sort_by_date|sort_by_kind|sort_by_ext/.test(pref_ID) ): // toggle sorting
				closeSubdirectory();
				switch(true) {
					case $('body').hasClass(pref_ID):  // pref_ID = current sort, reverse sort direction
						sort_direction = document.getElementsByTagName('body')[0].classList.value.match(/sort_direction_\w+/)[0];
						sort_direction = ( sort_direction === 'sort_direction_up' ? 'sort_direction_down' : 'sort_direction_up' );
						$('body').removeClass('sort_direction_up sort_direction_down').addClass(sort_direction);
						toggleSearchParam( sort_direction );
						break;
					case !$('body').hasClass(pref_ID):
						sort_direction = 'sort_direction_'+ $settings.sort_direction;
						$('body').removeClass('has_menu sort_by_default sort_by_name sort_by_time sort_by_size sort_by_date sort_by_kind sort_by_ext').addClass(pref_ID);
						$('body').removeClass('sort_direction_up sort_direction_down').addClass(sort_direction);
				}
				sorted = sortDirList( $('#tbody').find('tr'), pref_ID, sort_direction ); // make initial sort
				$('#tbody').empty().append(sorted);
				scrollThis('tbody','selected',false); // true = instant scroll

				// if ( $('body').hasClass('sort_by_default') ) { $('#tbody').find('#tbody tr.dir.border_top,#tbody tr.dir.border_bottom').toggleClass('border_top border_bottom'); }

				switch(true) { // sort grids --> change this to actual sort, not reload
					case $content_pane.hasClass('has_font_grid'):				$('#show_font_grid').click(); 	break;
					case $content_pane.hasClass('has_image_grid'):				$('#show_image_grid').click(); 	break;
					case $content_pane.attr('data-content') === 'has_grid':		$('#grid_btn').click(); 		break;
				}
				break;
			case pref_ID === 'theme': // toggle main UI theme
				if ( $('body').hasClass('theme_dark') ) 			{ pref_ID = 'theme_light'; } else { pref_ID = 'theme_dark'; }
				$('body').removeClass('theme_dark theme_light').addClass(pref_ID);
				if ( $('body').hasClass('editor_theme_default') )	{ $('body').removeClass('editor_theme_light editor_theme_dark').addClass('editor_'+ pref_ID); } else { toggleUIpref('editor_theme'); }
				if (window.top === window.self) { sendMessage(message_target,pref_ID); }
				break;
			case ( /editor_theme_default|editor_theme_light|editor_theme_dark/.test(pref_ID) ): // toggle text editor theme
				switch(true) {
					case pref_ID === 'editor_theme_default': 		$('body').removeClass('editor_theme_light editor_theme_dark').addClass('editor_theme_default editor_'+ getSearchParam('theme') ); break;
					case pref_ID === 'toggle_editor_theme_light':	$('body').removeClass('editor_theme_default'); pref_ID = 'editor_theme_light';	break;
					case pref_ID === 'toggle_editor_theme_dark':	$('body').removeClass('editor_theme_default'); pref_ID = 'editor_theme_dark'; 	break;
				}
				$('body').removeClass('editor_theme_default editor_theme_dark editor_theme_light').addClass(pref_ID);
				if (window.top === window.self) { sendMessage(message_target,pref_ID); }
				break;
			case pref_ID === 'source_text':
				$('body').toggleClass(pref_ID).toggleClass('split_view');
				if (window.top === window.self) { sendMessage(message_target,pref_ID); }
				break;
			case ( /toggle_source|toggle_preview|toggle_html|preview_text|preview_html/.test(pref_ID) ): // toggle default text editor view
				$('body').removeClass('source_text preview_text preview_html').toggleClass(pref_ID).toggleClass('split_view');
				if (window.top === window.self) { sendMessage(message_target,pref_ID); }
				break;
			case ( /split_view|alternate_background|hide_ignored_items|ignore_ignored_items|show_invisibles|show_numbers|hide_sidebar|play_all_media|enable_text_editing/.test(pref_ID) ): // toggle other boolean UI settings
				if (window.top === window.self) { sendMessage(message_target,pref_ID); }
				$('body').toggleClass(pref_ID);
				break;
			case ( /show_details/.test(pref_ID) ):
				$('body').toggleClass(pref_ID); $('#show_details').blur(); $('body').focus();
				break;
		}
		toggleSearchParam(pref_ID);
		if ( pref_ID === 'enable_text_editing' ) { // needs to be here and not in switch above -- why?
			$('.selected.text, .selected.markdown, .selected.code').find('a').click();
		}
		if ( window.top === window.self && $('.selected').length ) { scrollThis('tbody','selected',false); } // true = instant scroll
		if ( $('body').hasClass('focus_content') ) { focusContent(); }
	}
	// Click Toggle UI Pref elements
	$('.toggle_UI_pref').on('click',function(e) {
		e.stopPropagation();
		if ( !$(this).is('input') ) { e.preventDefault(); } // allow checkboxes to be checked
		if ( !$(this).hasClass('disabled') ) { toggleUIpref( $(this).attr('data-ui_pref') ); }
		closeMenus();
	});
	$('#content_text').on('click','.toggle_UI_pref',function(e) { // needed because text editor UI is only added on demand, so click events won't be attached
 		e.stopPropagation();
 		if ( !$(this).is('input') ) { e.preventDefault(); } // allow checkboxes to be checked
		if ( !$(this).hasClass('disabled') ) { toggleUIpref( $(this).attr('data-ui_pref') ); }
		closeMenus();
	});
	// RESIZE Sidebar/Content Pane
	function resizeSidebar(f) {
		f.stopPropagation();
		let $sidebar_wrapper = $('#sidebar_wrapper'), startX = f.pageX, window_width = window.innerWidth, sidebar_width = $sidebar_wrapper.width();
		$('body').addClass('has_overlay'); // prevent interference from the rest of ui
		$(document).on('mousemove',function(e) {
			e.stopPropagation(); e.preventDefault();
			let deltaX = e.pageX - startX;
			if ( e.pageX > 230 && e.pageX < window_width - 200 ) {
				$sidebar_wrapper.css({'width':sidebar_width + deltaX + 'px'});
				$content_pane.css({'width':(window_width - sidebar_width) - deltaX + 'px'});
			}
			// scrollThis('tbody','selected',false); // true = instant scroll
		});
		$(document).on('mouseup',function() {
			$('body').removeClass('has_overlay'); // remove the overlay
			$(document).off('mousemove'); // remove eventlistener
			setSearchParam('width',$sidebar_wrapper.width()); // set the sidebar width query
			if ( $body.hasClass('focus_content') ) { focusContent(); } // refocus content if necessary
		});
	}
	$('#handle').on('mousedown', function(f) { f.stopPropagation(); resizeSidebar(f); });

	// ***** BASIC UI FUNCTIONS ***** //
	// getElementById alias
	function getElById(id) { return $(document.getElementById(id) ); }

	// Scroll Selected Items
	function scrollThis(container_ID, scroll_el_class, bool) {
		let $container = document.getElementById(container_ID);
		if ( $container.height === 0 ) { return; } // don't scroll hidden elements
		let $scroll_el = ( scroll_el_class !== undefined ? $container.getElementsByClassName(scroll_el_class) : null );
		let scroll_behavior = ( ( bool !== undefined || bool === true || $content_pane.attr('data-content') === 'has_grid' ) ? 'instant' : 'smooth' ); // instant allows sidebar & grid to scroll simultaneously
		let scroll_block = ( $('body').hasClass('is_gecko') ? 'start' : 'nearest' );
		if ( $scroll_el !== undefined && $scroll_el.length === 1 ) {
			$scroll_el[0].scrollIntoView({ behavior:scroll_behavior, block:scroll_block, inline:'nearest' });
		}
	}
	// ***** SORTING ***** //
	function sortIndex(els,sort_type,sort_direction) { // sort_id = sort type
		let sort_id = sort_type.split('_').reverse()[0];
		const new_sort = new Intl.Collator(undefined, { numeric: true, sensitivity: 'base' });
		  let sorted = [], aName, bName, aData, bData;//, aLevel, bLevel, aKind, bKind;
			sorted = els.removeClass('sorted border_top').sort((a, b) => {
				// aLevel = $(a).attr('data-level');										bLevel = $(b).attr('data-level'); // subdirectory level
				aName = $(a).find('td.name').attr('data-name');  						bName = $(b).find('td.name').attr('data-name'); // aName, bName = item name
				aData = $(a).find('td[data-'+ sort_id +']').attr('data-'+ sort_id);		bData = $(b).find('td[data-'+ sort_id +']').attr('data-'+ sort_id); // aData, bData = size, date, kind, ext, time
				switch(true) {
					case sort_direction === 'sort_direction_down':
						switch(true) {
							case new_sort.compare(aData, bData) === 0:	return new_sort.compare(aName, bName); // if same data kind, sort by name
							default: 									return new_sort.compare(aData, bData); // otherwise sort by data kind
						}
					case sort_direction === 'sort_direction_up': // reverse sort
						switch(true) {
							case new_sort.compare(bData, aData) === 0:	return new_sort.compare(bName, aName);
							default: 									return new_sort.compare(bData, aData);
						}
					}
			});
			switch(true) { // add sorted border style
				case ( /default/.test(sort_id) ): // dirs and files
					break;
				case ( /kind|ext/.test(sort_id) ): // different item kinds or extensions
					sorted = sorted.sort((a, b) => {
						if ( $(a).find('td[data-'+ sort_id +']').attr('data-'+ sort_id) !== $(b).find('td[data-'+ sort_id +']').attr('data-'+ sort_id) ) { $(a).addClass('sorted border_top'); }
					});
					break;
				case ( /time/.test(sort_id) ): // if sorting by time, add rule between dirs and files
					sorted = sorted.sort((a, b) => { if ( $(a).attr('data-kind') !== $(b).attr('data-kind') ) { $(a).addClass('sorted border_top'); } });
					break;
			}
			return sorted;
	}
	// Sort the Dir List on click
	function sortDirList(rows, sort_type, sort_direction) {
		let  $sorted = [], $sort_all = rows, $sort_dirs = $sort_all.filter('.dir:not(.app)'), $sort_files = $sort_all.filter('.file,.app');// === 'default' ? 'name' : id;
		switch(true) {
			case sort_type === 'sort_by_default' || ( sort_type !== 'sort_by_name' && $settings.dirs_on_top === true ):
				const $sorted_dirs = sortIndex($sort_dirs, sort_type, sort_direction);
				const $sorted_files = sortIndex( $sort_files, sort_type, sort_direction );
				if (sort_direction === 'sort_direction_down') { $sorted = $.merge($sorted_dirs,$sorted_files); } else { $sorted = $.merge($sorted_files,$sorted_dirs); }
				break;
			default:
				$sorted = sortIndex( $sort_all, sort_type, sort_direction );
			}
		return $sorted;
	}
	// ***** END SORTING ***** //
	// ***** END BASIC UI FUNCTIONS ***** //

	// ***** CONTENT PANE ***** //
	// Focus Sidebar
	function focusSidebar() {
		document.activeElement.blur();
		closeMenus();
		$('body').removeClass('faded focus_content').find('#sidebar').focus();
		sendMessage('iframe','blur_iframe');
	}
	// Focus content
	function focusContent(id,e) {
		$('body').addClass('focus_content');
		closeMenus();
		switch(true) {
			case id === 'content_iframe' && cmdKey(e) && e.key === 'ArrowDown' && window.self === window.top && $('body').hasClass('focus_content'):
				$content_iframe.focus();
				sendMessage('iframe','iframe_arrow_navigation','','ArrowDown');
				$('#iframe_body a').click();
				break;
			case $content_pane.attr('data-content') === 'has_font':			$('#specimen').focus();		break;
			case document.activeElement.id.toLowerCase() === 'text_preview' && getFocusableEls('#text_preview').length > 0:		getFocusableEls('#text_preview').first().focus();	break;
			case $content_pane.attr('data-content') === 'has_text_editor':	focusTextEditorPanes();		break;				// focus text editor
			case ( /has_text|has_markdown|has_code|has_htm|has_dir|has_app/.test($content_pane.attr('data-content') ) ):	// no break; focus iframe text editor
			case $content_iframe.hasClass('has_content'): 																	// focus iframe and/or iframe text editor
				$('#content_iframe').focus(); if ( e !== undefined && e.shiftKey ) { sendMessage('iframe','shift_focus_iframe'); } else { sendMessage('iframe','focus_iframe'); }	break;
			case ( /has_video|has_pdf/.test($content_pane.attr('data-content') ) ): 										// no break; video, pdf
			case $content_pane.attr('data-content') === undefined:  														// no break; data-content undefined
			case $('body').hasClass('has_playlist'):					$('body').removeClass('focus_content');	break;		// don't focus content in this and the above two cases
			case $content_pane.attr('data-content') === 'has_grid':		$('#content_grid').focus();		break;				// grids
			case $content_pane.attr('data-content') === 'has_image':	$('#content_image').focus();	break;				// images
			case id !== undefined:		document.getElementById(id).focus();							break;
		}
	}
	// get focusable elements
	function getFocusableEls(id) {
		let focusableEls = ( id !== undefined ? $(id).find('a,button,input,select,textarea,div[contenteditable]').filter(':visible') : $('a,button,input,select,textarea,div[contenteditable]').filter(':visible') );
		return focusableEls;
	}
	// focus focusable elements in iframe files or text editor preview
	function focusFocusableEls(e,id) {
		e.preventDefault();
		let els = Array.from(getFocusableEls(id));
		switch(true) {
			case e.shiftKey: // tab + shift: focus prev
				switch(true) {
					case els.indexOf(document.activeElement) === 0: sendMessage('top','focus_sidebar'); break;
					case !els.includes(document.activeElement): els[els.length - 1].focus(); break; // if nothing focused...focus last el
					default: els[els.indexOf(document.activeElement) - 1].focus(); // else focus previous
				}
				break;
			case document.activeElement === els[els.length - 1]: sendMessage('top','focus_sidebar'); break; // if last focussable el, focus sidebar
			default: els[els.indexOf(document.activeElement) + 1].focus(); // tab: select next focusable element
		}
	}
	// focus button (for warnings)
	function focusButton(id) { let el = document.getElementById(id); el.classList.add('focus'); el.focus(); }
	//***** SHOW INDIVIDUAL CONTENT TYPES *****//
	// Show Grid
	function showGrid(id) {
		if ( id !== undefined ) { makeGrids(id); } // initial make grid items; otherwise, just unhide existing grid (see below)
		closeContent();
 		const selected_ID = $('#tbody').find('.selected.image, .selected.font').attr('id');
		$('#grid_btn').addClass('has_grid');
		$('#content_pane').removeClass('has_hidden_grid').attr('data-content','has_grid').find('div[data-id="'+ selected_ID +'"]').addClass('selected').siblings().removeClass('selected hovered');
		focusContent();
	}
	// Hide Grid
	function hideGrid() { if ( $content_pane.attr('data-content') === 'has_grid' ) { $content_pane.removeAttr('data-content').addClass('has_hidden_grid'); } }
	// Show Hidden Grid
	function showHiddenGrid() { if ( $content_pane.hasClass('has_hidden_grid') ) { showGrid(); } }
	// Close Grid (remove grid elements, etc.)
	function closeGrid() {
		$('#grid_btn').removeClass('has_grid');
		if ( $content_pane.attr('data-content') === 'has_grid' ) { $content_pane.removeAttr('data-content'); }
		$content_pane.removeClass('has_image_grid has_font_grid').find('#content_grid').attr('style','').empty();
	}
	// Show Text Editor
	function showTextEditor() {
		switch(true) {
			case $content_pane.attr('data-content') === 'has_text_editor': // hide open text editor
				hideTextEditor(true);
				break;
			case !$body.hasClass('has_text_editor_UI'): // add the text editor UI if loading text editor for first time
				setUpTextEditorUI();
			default: // show editor
				// closeContent();
				$('#content_video').trigger('pause');
				$content_pane.removeClass('has_hidden_text_editor').attr('data-content','has_text_editor'); // empty title
				$('#text_editor_row').addClass('has_text_editor');
				focusContent();
		}
	}
	// Hide Text Editor
	function hideTextEditor(bool) {
		if ( $content_pane.attr('data-content') === 'has_text_editor' ) {
			$content_pane.removeAttr('data-content');
			if ( bool === true ) { $content_pane.addClass('has_hidden_text_editor'); }
			if ( $('tr.selected').length > 0 ) { clickRow($('tr.selected').attr('id')); }
			focusSidebar();
		}
	}
	// Show Hidden Text Editor
	function showHiddenTextEditor() { if ( $content_pane.hasClass('has_hidden_text_editor') ) { showTextEditor(); } }
	// showIndexSource();

	// Show Audio
	function showAudio(id,iframe_audio_link,bool) {
		closeMedia('video'); document.activeElement.blur(); $('body').focus();
		let row, link, title;
		switch(true) {
			case id === 'content_iframe_file': // clicked iframe audio files
				link = decodeURIComponentSafe(iframe_audio_link);
				title = link.slice(link.lastIndexOf('/') + 1);
				$content_pane.addClass('has_audio has_iframe_audio');
				$('#content_iframe_utility').attr('src',link.slice(0,link.lastIndexOf('.') )+ '.cue' ); // load cue sheet in utility iframe

 				break;
			default: // dir_list audio files
				row = getElById(id);
				switch(true) {
					case row.hasClass('local'): break;
					case bool === 'true': // bool !== undefined: if from autoLoadFile, just select file (don't add .audio_loaded class)
						row.addClass('selected');
						if ( $('.dir.content_loaded').length === 1 ) { $('.dir.content_loaded').addClass('selected').siblings().removeClass('selected'); } // select dir.selected instead of media
						break;
					default: row.addClass('audio_loaded selected').siblings().removeClass('audio_loaded selected'); // otherwise select loaded media
				}
				link = row.find('a').attr('href');
				title = row.find('.name').find('.tbody_row_cell_name_a_span').text();
				$content_pane.addClass('has_audio').removeClass('has_iframe_audio');
				getCueSheet(id,link,'audio');
		}
		$audio_player.attr('src', link );
		$('#content_audio_title').find('span').empty().text( title );
		$('#content_audio_playlist').removeClass('has_content');
 		//setPlayerStatus('play');
	}
	// Show Video
	function showVideo(id,link) { closeMedia('audio'); getCueSheet(id,link); document.activeElement.blur(); $content_video.focus(); } // rest of processing is done in showContent();
	// GET CUE SHEET
	function getCueSheet(id,link,kind) { // id = 'content_iframe_file' or selected dir_list media id, link = selected href, kind = audio or video
		$('.cue_sheet_track_list_container').removeClass('has_cue_sheet').empty();
		let media_file_name = getElById(id).find('.name').attr('data-name');
			media_file_name = (media_file_name !== undefined ? media_file_name.slice(0,media_file_name.lastIndexOf('.')) + '.cue' : null); // undefined === from iframe, can't search for cuesheet
		let $cue_files;
		if ( $('#tbody tr[data-ext="cue"]').length === 0 ) { return; } else { $cue_files = $('#tbody tr[data-ext="cue"]'); }// abort if no cue files found
		let cue_file = $cue_files.filter( function(i) { return $cue_files[i].cells[0].dataset.name === media_file_name; }); // find matching cue sheet
		if ( cue_file.length === 1 ) {
			$(cue_file[0]).addClass('content_loaded');
			$('#content_iframe_utility').attr('src',$(cue_file[0]).find('a').attr('href').trim() ); // load cue sheet in utility iframe
		}
		switch(kind) { // get durations
			case 'audio': $('#cue_sheet_track_list_container_audio').attr('data-duration',document.getElementById('audio').duration); break;
			case 'video': $('#cue_sheet_track_list_container_video').attr('data-duration',document.getElementById('content_video').duration); break;
		}
	}
	// TESTING: Get Media Duration (add to cue list, add to tr.audio
	var getFormattedTime = (secs) => {
		let sec_num = parseInt(secs, 10), hours = Math.floor(sec_num / 3600), minutes = Math.floor(sec_num / 60) % 60, seconds = sec_num % 60;
		let formattedTime = [hours,minutes,seconds].map( v => v < 10 ? "0" + v : v ).filter( (v,i) => v !== "00" || i > 0 ).join(":");
			formattedTime = formattedTime.replace(/^0/m,''); // remove initial 0
		return formattedTime;
	};
	function getMediaDuration(link, callback) {
		if ( link !== undefined ) {
		let audio_file = new Audio();
			audio_file.src = link;
			audio_file.onloadedmetadata = function() { callback( getFormattedTime( audio_file.duration )); };
			audio_file.onerror = function() { callback( new Error("File not found")); };
		}
	}
	// Process Cue Sheet
	function processCueSheet(cue_sheet_text) {
		let cue_sheet_tracks, track, command, prepped_track_list = [], track_id, display_time, index, index_sec;
			cue_sheet_text = cue_sheet_text.replace(/\t/g,' ');
		if ( !cue_sheet_text.startsWith('TRACK') ) {
			// let cue_sheet_info = cue_sheet_text.slice(0,cue_sheet_text.indexOf('TRACK ')); // if there is a file info header, remove it;
			cue_sheet_tracks = cue_sheet_text.slice(cue_sheet_text.indexOf('TRACK ')).split('TRACK ').reverse();
		} else {
			cue_sheet_tracks = cue_sheet_text.split('TRACK ').reverse();
		}
		for ( track of cue_sheet_tracks ) { // for each track in the cue sheet...
			let prepped_track = [];
				track = track.trim().split(/[\n\r]/);
				track_id = track.shift().split(' ')[0];
				for ( command of track ) { // for each command (e.g.: PERFORMER "Artist"), trim and split it into command and value
					command = command.replace(/\"$/m,'').trim();
					switch(true) {
						case ( /^PERFORMER\s+/.test(command) ):	prepped_track[1] = '<span class="cue_performer">'+ command.split(/\s+\"/)[1] +'</span>'; 	break; // artist name
						case ( /^TITLE\s+/.test(command) ): 	prepped_track[2] = '<span class="cue_title">'+ command.split(/\s+\"/)[1] +'</span>'; 		break; // track title
						case ( /^INDEX\s+01\s+/.test(command) ): // index
							display_time = command.split(/^INDEX\s+01\s+/)[1];
							index = display_time.split(':').reverse(); // cue time format is mm:ss:ff (ff = frames @ 75 frames/sec)
							index_sec = index[0]/75 + index[1]*1 + index[2]*60; // convert index to seconds
							prepped_track[3] = '<span class="cue_index">'+ display_time +'</span></li>';
							break;
					}
				}
				prepped_track[0] = '<li id="track_'+ track_id +'" class="cue_sheet_track background_color_D0_50" data-time="'+ index_sec +'">' +
									'<span class="cue_track_id has_background_before">'+ track_id +'</span>';
				if ( prepped_track[1] === undefined || ( /cue_performer"><\//.test(prepped_track[1]) ) ) { prepped_track[1] = '<span class="cue_performer">[missing]</span>'; }
				if ( prepped_track[2] === undefined || ( /cue_title"><\//.test(prepped_track[2]) ) ) { prepped_track[2] = '<span class="cue_title">[missing]</span>'; }
				if ( prepped_track.length > 3 ) { prepped_track_list.push(prepped_track.join('')); } // prepped_track.length > 3 to prevent adding empty track
		}
		prepped_track_list = `<ul class="cue_sheet_track_list border_bottom"><li id="cue_sheet_background" class="background_color_D0_50"></li>
								<li id="cue_sheet_title" class="cue_sheet_track header background_color_D0_50 border_top">
									<span>${ getLinkInfo( $('#content_iframe_utility').attr("src") )[1] }</span>
								</li>
								<li class="cue_sheet_track header background_color_D0_50 border_top border_bottom">
									<span class="cue_track_id">Track</span><span class="cue_performer">Artist</span>
									<span class="cue_title">Title</span>
									<span class="cue_index" title="mm:ss:ff">Time</span>
								</li>`+ prepped_track_list.reverse().join('') +'</ul>';
		switch(true) {
			case $('tr.audio_loaded').length > 0: case $content_pane.hasClass('has_iframe_audio'):
				$('#cue_sheet_track_list_container_audio').addClass('has_cue_sheet').append(prepped_track_list); // add cue sheet track list to menu
				break;
			case $('tr.video.content_loaded').length > 0: case $content_pane.hasClass('has_iframe_file'):
				$('#cue_sheet_track_list_container_video').addClass('has_cue_sheet').prepend(prepped_track_list); // add cue sheet track list to menu
				break;
		}
	}
	// Set track time on click
	$('.cue_sheet_track_list_container').on('click','li:not(.header)',function() {
		let $parent_nav_id = $(this).closest('nav').attr('id');
		switch(true) {
			case $(this).hasClass('selected'): playPauseMedia(); break;
			default:
				$(this).addClass('selected').siblings().removeClass('selected');
				let time = $(this).attr('data-time'); // cue time format is mm:ss:ff (ff = frames, 75 frames/sec)
				switch($parent_nav_id) {
					case 'cue_sheet_track_list_container_audio': if ( time < document.getElementById('audio').duration ) 			{ $('#audio').prop('currentTime',time); } break;
					case 'cue_sheet_track_list_container_video': if ( time < document.getElementById('content_video').duration )	{ $('#content_video').prop('currentTime',time); } break;
				}
			}
	});
	$('.cue_sheet_track_list_container').on('mouseenter',function() { // add selected class to first track whose time is less than currentTime
		if ( $(this).attr('id') === 'cue_sheet_track_list_container_video' ) { $(this).find('.cue_sheet_track_list').css({'top':$(this).height() }); }
		let currentTime = document.getElementById('audio').currentTime;
		$(this).find('.cue_sheet_track_list').attr('data-time',currentTime);
		let currentTrack = $(this).find('.cue_sheet_track_list').find('li').filter(function() { return parseInt( $(this).attr('data-time')) <= Math.round(currentTime); }).last();
			currentTrack.addClass('selected').siblings().removeClass('selected');
	});
	// SHOW FONT (and create font items) row
	function setContentFontSource(id,bool,font_grid,link) { // bool = true if for show font grid, id from fontGridItems(); link = from previewed directory
		  let font_styles = $('#font_styles');
		const font_family =	( link !== undefined ? link.slice(link.lastIndexOf('/') + 1,link.lastIndexOf('.')) : getElById(id).find('.name').attr('data-name') );
		const font_url =	( link !== undefined ? link : getElById(id).find('a').attr('href') );
		switch(true) {
			case bool === false: // just show selected font
				if ( font_styles.html().length > 0 ) { font_styles.empty(); } // delete previous @font-face rule
				font_styles.append( `@font-face { font-family: "${ font_family }"; src: url("${ font_url }"); }` );
				$content_font.css({ 'font-family':'"'+ font_family +'"' }); // set content font style
			case font_grid === 'font_grid': // else make font grid items
				const $font_grid_item_el = $( `<div class="font_grid_item border_top_x background_color_EE_22" data-id="${ id }"></div>` );
				  let $grid_item = $font_grid_item_el.clone();
				const display_name = font_family;
				$('#font_grid_styles').append( `@font-face { font-family: "${ font_family }"; src: url("${ font_url }"); }`);
				$grid_item.append( `<p class="text_color_111">${ display_name.toUpperCase() }</p><h2 style=\'font-family: "${ font_family }"\'; ><a class="text_color_111" href="${ font_url }">${ display_name.slice(0,font_family.lastIndexOf(".")) }</a></h2>` );
				return $grid_item;
		}
	}
	// Open Font File (req: opentype.js font parsing)
	$('#open_font_label').on('click',function(e) { e.stopPropagation(); });
	// Open font
	$('#menu').on('change','#open_font',function(e) { $('body').removeClass('has_menu faded'); openFile(e,'font'); });
	// Open Font File
	function openFontFile(files,reader) {
		closeContent();
		hideGrid();
		$content_pane.attr('data-content','has_font_file');
		$content_font.addClass('has_content');
		parseFont(reader.result);
		$('#title span').html( files.name );
		$('#open_font').val(''); // reset input to allow same font to be reopened immediately after closing.
		focusContent();
	}
	// Parse font (req opentype.js)
	function parseFont(fontblob) {
		let font = window.opentype.parse(fontblob);
			getFontInfo(font);
		let $glyphs_container = $('#glyphs_container');
			$glyphs_container.empty();
		let $glyph_container_el =	$('<div class="glyph_container background_color_EE_22 border_right_x border_bottom_x"></div>');
		let $glyph_canvas_el =		$('<canvas class="glyph invert" width="120" height="120"></canvas>');
		let $glyph_info_el =		$('<div class="glyph_info text_color_333"></div>');
		let $glyph_viewer =		$('#glyph_viewer');
			$glyph_viewer.data('data-font-name',font.names.fullName.en);
		let glyphs = font.glyphs;
			$content_font.data('data-glyphs',glyphs); // add glyphs data to $content_font
		// Draw glyphs
		let glyph, glyph_width, context_X, bounding_box, glyph_unicode, $glyph_container, this_glyph, context, $glyph_info;
		for ( let i = 0; i < glyphs.length; i++ ) {
			glyph = glyphs.glyphs[i];
			// Glyph width
			bounding_box = glyph.getBoundingBox();
			glyph_width = bounding_box.x2 - bounding_box.x1;
			context_X = (60 - glyph_width/24);
			// Add glyph info and append elements
			glyph_unicode = ( glyph.unicode !== undefined ? '#'+ glyph.unicode : glyph.unicode );
			$glyph_container = $glyph_container_el.clone();
			$glyph_info = $glyph_info_el.clone();
			$glyph_info.text(glyph.index +': '+ glyph.name +', '+ glyph_unicode);
			$glyph_container.attr('id','glyph_container_'+ glyph.index ).attr('data-id','glyph_container_'+ glyph.index);
			$glyph_container.append( $glyph_canvas_el.clone().attr('id','glyph_'+ glyph.index ) ).append($glyph_info);
			$glyphs_container.append( $glyph_container );
			// Draw glyph
			this_glyph = document.getElementById('glyph_'+ glyph.index);
			$(this_glyph).data('contextX',context_X);
			context = this_glyph.getContext('2d');
			glyph.draw(context, context_X, 84, 72);
		}
	}
	// Get font info
	function getFontInfo(font) {
		let font_names = font.names;
		let $font_info = $('<table id="font_info" class="background_color_C0_40"><thead><tr><th colspan=2 class="border_top text_color_111">FONT INFO: '+ font.names.fullName.en.toUpperCase() +'</th></tr></thead><tbody id="font_info_body" class="background_color_D0_50 border_top"></tbody></table>');
		for ( let name in font_names ) {
			let value = font_names[name].en;
			if ( name.endsWith('URL') ) {
				let href = value;
				if ( !value.startsWith('http') ) { href = 'http://'+ value; } // in case url without protocol is used
				value = '<a class="text_color_111" href="'+ href +'" target="_blank">'+ value +'</a>';
			}
			$font_info.find('tbody')
				.append('<tr><td class="font_info_name border_right border_bottom text_color_111">'+ name +': </td><td class="font_info_value border_bottom text_color_111">'+ value +'</td></tr>');
		}
		let num_glyphs = font.numGlyphs; // glyph count
		$font_info.find('tbody')
			.append('<tr><td class="font_info_name border_bottom border_right text_color_111">numGlyphs: </td><td class="font_info_value border_bottom text_color_111">'+ num_glyphs +'</td></tr>');
		$content_font.find('#font_viewer').prepend($font_info);
	}
	// Show glyph viewer
	$content_font.on('click','.glyph',function(e) {
		e.stopPropagation();
		let id = $(this).attr('id');
		$(this).parent('div').addClass('selected').siblings().removeClass('selected');
		showFontGlyph(id);
	});
	function showFontGlyph(id) {
		let $glyph_viewer = $('#glyph_viewer');
		let glyphX = $('#'+ id).data('contextX');
			id = id.slice(id.lastIndexOf('_') + 1); // convert id to number only
		let glyphs = $content_font.data('data-glyphs'); // get glyphs
		let glyph = glyphs.get(id);
		let glyph_name = glyph.name;
		let glyph_path = glyph.getPath(glyphX,84,72);
		let glyph_SVG = glyph_path.toSVG().replace(/"/g,'\'');
		// set the background SVG image:
		let SVG_prefix = 'url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\' x=\'0px\' y=\'0px\' width=\'120px\' height=\'120px\' viewBox=\'0 0 120 120\' style=\'enable-background:new 0 0 120 120;\' xml:space=\'preserve\' ><g>';
		$glyph_viewer.show().css({'background-image': SVG_prefix + glyph_SVG +'</g></svg>")'});
		$glyph_viewer.data('data-raw-svg',glyph_SVG).data('data-glyph-name',glyph_name).find('#glyph_viewer_info div').text(id +': '+ glyph_name +', #'+ glyph.unicode ); // for saving SVG
		$content_pane.attr('data-content','has_glyph');
	}
	// Save glyph svg
	function saveGlyph() {
		let file_name = $('#glyph_viewer').data('data-font-name') +'—'+ $('#glyph_viewer').data('data-glyph-name') +'.svg';
		let data_prefix = '<?xml version="1.0" encoding="utf-8"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="120px" height="120px" viewBox="0 0 120 120" style="enable-background:new 0 0 120 120;" xml:space="preserve" ><g>';
		let data_suffix = '</g></svg>';
		let data = data_prefix +  $('#glyph_viewer').data('data-raw-svg') + data_suffix;
		saveFile(data,'image/svg+xml',file_name);
	}
	$content_font.on('click','#save_svg',function(e) { e.stopPropagation(); saveGlyph(); });
	// END OPEN FONT FILE Operations

	// Create new #content_pdf
	function setupContentPDF() {
		let $embed = '<embed id="content_pdf" class="content" name="plugin" tabindex="0" data-kind="pdf"></embed>';
		$('#content_pdf').remove();
		$content_image_container.after($embed);
	}
	// OPEN LINK FILES (webloc, url)
	function openLink(ext) {
		let link, content = ( $protocol === 'file:' ? $('#iframe_body pre').text() : document.getElementsByTagName('iframe')[0].contentWindow.document.children[0].children[1].innerHTML );
		switch(true) {
			case content === undefined: break;
			case ( /webloc|inetloc/.test(ext) ): link = content.split('<string>')[1].split('</string>')[0]; break;
			case ext === 'url': link = content.split('URL=')[1].split('\n')[0];
		}
		let url = ( link.startsWith('file') ? link : newURL(link) );
		switch(true) {
			case url ===  undefined: break;
			case link.startsWith('file') && window.location.protocol !== 'file:': // local files and links
				$body.addClass('has_warning').find('#warnings_container').addClass('warning_local_file'); $('#warning_btn_ok').focus();
				break;
			case link.startsWith('file') && window.location.protocol === 'file:': // local files and links
			case url.origin === window.location.origin: // same origin
				sendMessage('top','show_content','',[link,getLinkInfo(link)[3]]);
				break;
			default:
				window.open(link,'_blank'); // open non-local links in new tab
		}
	}
	// END SHOW INDIVIDUAL CONTENT TYPES

	// ***** MAIN SHOW CONTENT FUNCTIONS ***** //
	// Set Content Pane classes
	function setContentClasses(id, kind, content_el) {
		switch(true) { // add loaded or playing classes
			case kind === 'audio': // case kind === 'video':
				getElById(id).addClass('selected').siblings('.audio').removeClass('audio_loaded selected');
				break;
			default: // non-media items
				getElById(id).addClass('content_loaded').siblings().removeClass('content_loaded');
		}
		switch(true) {
			case kind === 'audio':
				if ( id === 'content_iframe_file' ) { $content_pane.addClass('has_iframe_audio'); } else { $content_pane.addClass('has_audio'); }
				break;
			case ( /app|dir/.test(kind) ): // apps and directories
				if ( id === 'content_iframe_file' ) { $content_pane.attr('data-content','has_dir').addClass('has_iframe_dir'); }
				else { $content_pane.attr('data-content','has_dir').addClass('has_dir').removeClass('has_iframe_dir has_iframe_file'); }
				break;
			default:
				if ( id === 'content_iframe_file' ) { $content_pane.removeClass('has_dir').addClass('has_iframe_file').attr('data-content','has_'+ kind);}
				else { $content_pane.attr('data-content','has_'+ kind).removeClass('has_dir has_iframe_dir has_iframe_file'); }
		}
		$('#content_'+ content_el).addClass('has_content');
	}
	// LINKS, SEARCH PARAMS, AND QUERIES
	// get query string for various content kinds
	function makeSearchParams(params) {
		let query_str = new URLSearchParams();
		for ( let param of params ) { query_str.append(param,getSearchParam(param)); }
		return query_str;
	}
	function getLinkQueries(kind) {
		let query_str, params;
		switch(true) {
			case kind === 'pdf': // pdfs
				query_str = '#view=fitB&scrollbar=1&toolbar=1&navpanes=1';
				break;
			case ( /text|markdown|code/.test(kind) ): // editable text files
				params = ['split_view','default_text_view','theme','editor_theme','enable_text_editing'];
				query_str = '?'+ makeSearchParams(params).toString();
				break;
			case ( /app|dir/.test(kind) ): // apps and directories
				params = ['sort_by','sort_direction','show_numbers','use_custom_icons','show_invisibles','hide_ignored_items','ignore_ignored_items','alternate_background','theme'];
				query_str = '?'+ makeSearchParams(params).toString();
		}
		return query_str;
	}
	// CREATE LINKS FOR VARIOUS CONTENT KINDS
	function setContentSources(id, kind, link, content_el) {
		switch(true) { // make source link for content elements; default is link
			case kind === 'font': setContentFontSource(id,false,'',link); break;
		}
		$('#content_'+ content_el).attr('src',link); // set source for content element
	}
	// SET CONTENT TITLE
	function setContentTitle(link) { // kind = dir or files
		let $title = $('#title span'), title_text = '';
		let $selected = $('#tbody tr.selected'),selected_link, selected_title, content_link;//, content_title;
			selected_link = ( $selected.length === 1 ? decodeURIComponentSafe($selected.find('a').attr('href')).trim() : '' ); // selected sidebar item; link = href
			selected_title = ( $selected.length === 1 ? $selected.find('.tbody_row_cell_name_a_span').text() : '' ); // title from stored data
		let content_link_info = getLinkInfo(link); // actual loaded content src; if iframe, link is from iframe data-content_name = full path of current item w/o queries
			content_link = ( content_link_info !== undefined ? decodeURIComponentSafe(content_link_info[0]).trim() : '' );
		switch(true) {
			case selected_link !== content_link: 	title_text = content_link; 	break;	// unsynced iframe items
			default: 								title_text = selected_title; 		// synced iframe items
		}
		title_text = title_text.split('/').join('/<wbr>').split('_').join('_<wbr>'); // allow nice line breaks in title
		$title.empty().html(title_text); // set title text
	}
	// Get Image Dimensions
	function getImageDimensions(link, callback) { if ( link !== undefined ) { let img = new Image();  img.src = link;  img.onload = function() { callback( this.width, this.height ); }; } }
	function setImageDimensions() {
		switch(true) {
			case window.top !== window.self: break; // ignore iframe content
			case $content_pane.attr('data-content') === 'has_image':
				getImageDimensions( $content_image.attr('src'), function( width,height ) {
					$('#title span').attr('data-after',' ('+ width +'px × '+ height +'px) ('+ ( ($content_image.width()/width)*100 ).toFixed(1) +'%)'); // callback
				});
				break;
			default: $('#title span').removeAttr('data-after'); // remove image dimensions
		}
	}
	// SHOW IFRAME CONTENT called when iframe loads
	function showIframeContent(args) {
		let link = $content_iframe.attr('data-content_name'), kind = $content_iframe.attr('data-kind');
		switch(true) { // make source link for content elements; default is link
			case ( /app|dir/.test(kind) ): $content_pane.attr('data-content','has_dir'); break;//.addClass('has_iframe_dir').removeClass('has_iframe_file');
			default: $content_pane.attr('data-content','has_'+kind);//.removeClass('has_iframe_dir');//.removeClass('has_iframe_file');
			}
		if ( args[0].indexOf('subdirectory=true') < 0 ) { $content_pane.attr('data-loaded','loaded'); setContentTitle(link,kind); } // show iframe, hide loading spinner, set title
	}
	// SHOW OTHER CONTENT
	function showContent(id, args) { // show any content on row click; last two arguments are only from clicking iframe links; args = [link,kind]
		let row, link_info, link, kind;
		switch(true) { // set vars and content_iframe attributes for iframe content or sidebar content
			case ( /grid_btn|text_editor|grid_btn|show_image_grid|show_font_grid/.test(id) ): break; // ignore these ids (i.e, don't get links)
			case id === 'view_directory_source': break;
			case ( /content_iframe_dir|open_sidebar_in_content_pane/.test(id) ): // prep for iframe dirs
				$('body').addClass('focus_content');
				link_info = getLinkInfo(args[0]);
				link = link_info[0]; // set links for default (chrome) and gecko browsers
				link += getLinkQueries('dir'), kind = link_info[3];
				$content_pane.addClass('has_iframe_dir').removeClass('has_iframe_file');
				$content_iframe.removeAttr('data-iframe_file_src'); // because it's not needed after opening a dir
				break;
			case id === 'content_iframe_file': // prep for iframe files
				$('body').addClass('focus_content');
				link_info = getLinkInfo(args[0]);
				link = link_info[0]; // set links for default (chrome) and gecko browsers
				kind = link_info[3];
				switch(true) {
					case kind === 'audio':
						$content_pane.addClass('has_iframe_audio');
						break;
					default:
						$content_pane.addClass('has_iframe_file');
						$content_iframe.attr('data-iframe_file_src',$content_iframe.attr('src')); // remember iframe file parent directory
				}
				break;
			case id !== '': // show content from sidebar items or iframe items (from above) and get link, kind
				row = getElById(id); // link = getFormattedLink(row.find('a').attr('href'),row.attr('data-kind'));
				link_info = getLinkInfo(row.find('a').attr('href')); kind = link_info[3];
				link = link_info[0]; // set links for default (chrome) and gecko browsers
				switch(true) {
					case kind === 'dir': case kind === 'app': case ( /code|text|markdown/.test(kind) ): // add link queries for dirs and text
						link = link + getLinkQueries(kind); break;
					case ( /text|markdown|code/.test(kind) ):
						break;
				}
				break;
		}
		let content_el = ( ['audio','font','image','pdf','video'].includes(kind) ? kind : 'iframe' );
		switch(true) {
			case window.top !== window.self:
				break; // don't attempt to show content for iframe items when navigating
			case row !== undefined && row.hasClass('ignored') && getSearchParam('ignore_ignored_items') === 'false': // try to open ignored files if they are not to be ignored
				window.location = row.find('a').attr('href');
				break;
			case row !== undefined && row.hasClass('ignored') && getSearchParam('ignore_ignored_items') === 'true': // don't open ignored files if they are to be ignored
				closeContent(); setContentTitle($('tr.selected').find('a').attr('href')); $content_pane.attr('data-content','has_ignored');
				break;
			case kind === 'link':
				closeContent(); $content_pane.attr('data-loaded','loaded'); $content_iframe.addClass('has_content').attr('src',link).attr('data-kind',kind);
				break;
			case ( /grid_btn|show_image_grid|show_font_grid/.test(id) ):	showGrid(id);			break;	// show grid
			case id === 'text_editor' || id === 'text_editor_row':			showTextEditor();		break;	// show the text editor
			case kind === 'audio': 											showAudio(id,link); 	break;	// show audio
			case kind === 'video':											showVideo(id,link);				// no break; close audio when showing video ???? test if needed?
			case ['font','image','pdf','video'].includes(kind):
				closeContent(); 																			// Close all open content
				setContentSources(id, kind, link, content_el); 												// Set the src attribute for the content element
				setContentClasses(id, kind, content_el); 													// Add "data=has_<kind>" to content_pane; test id for content_iframe
				setContentTitle($('#content_container .has_content:not(#content_iframe)').attr('src')); 	// no break; Set the title for non-iframe content
			case kind === 'image':											setImageDimensions(); 	break;
			case id === 'view_directory_source': kind = 'view_directory_source'; link = current_location + '?&view_directory_source=true'; // no break;
			case kind === 'dir' && id !== 'content_iframe_dir': 											// no break;
			case kind === 'app' && id !== 'content_iframe_dir': 											// no break;
			case content_el === 'iframe': 																	// set iframe source and hide until iframe loaded
				closeContent(); 																			// Close all open content
				$content_pane.attr('data-loaded','unloaded'); 												// hide iframe until loaded, show loading spinner
				$content_iframe.addClass('has_content').attr('src',link).attr('data-kind',kind);			// set iframe source, data-kind
				if ( id !== 'view_directory_source' ) { $content_iframe.attr('data-content_name',link_info[0]); }
				break;
		}
		if ( $('body').hasClass('focus_content') || id === 'content_iframe' ) { sendMessage('iframe','focus_iframe'); }
	}
	// Show source of current sidebar dir in content pane
	function showDirectorySource() {
		switch(true) {
				case $body.hasClass('has_directory_source'): $('#close_btn').click(); break; // close if open
			default: $body.addClass('has_directory_source'); showContent('view_directory_source',[current_location]);
		}
	}
	$('#view_directory_source').on('click',function(e) { e.stopPropagation(); showWarning( 'showDirectorySource' ); }); // toggle show directory source
	// Show current sidebar dir in content pane
	function openSidebarInContentPane() { showContent('open_sidebar_in_content_pane',[current_location,'dir']); focusContent(); }
	$('#open_in_content_pane').on('click',function() { showWarning( 'openSidebarInContentPane' ); });
	//***** CLOSE CONTENT (Close button or Cmd/Ctrl + W) *****//
	// Close Audio/Video
	function closeMedia(kind) { // type === audio || video
		let $media_el = ( kind === 'audio' ? $audio_player : $content_video );
			$media_el.trigger('pause').removeAttr('src');
		switch(true) {
			case kind === 'audio':
				$('tr.audio_loaded').removeClass('audio_loaded');
				$('#content_audio_title span').empty();
				$('#content_audio_playlist').removeClass('has_content');
				$('body').removeClass('is_playing is_paused');
				$content_pane.removeClass('has_audio has_iframe_audio');
				sendMessage('iframe','close_iframe_audio');
				break;
			case kind === 'video' && $('#content_pane').attr('data-content') === 'has_video':
				$('tr.video.content_loaded').removeClass('content_loaded');
				$('#content_pane').removeAttr('data-content').find('#content_video').removeClass('has_content');
				break;
		}
	}
	$('#close_audio').on('click',function(e) { e.stopPropagation(); closeMedia('audio'); }); // Close Audio button click
	// Close Playlist
	function closePlaylist(bool) { // bool === true: close all content
		$('#tbody').empty().html($('#tbody').data('dir_list')); // restore original dir_list
		$body.removeClass('has_playlist has_filelist has_media has_audio has_video has_fonts has_images has_menu')
			.addClass( $('#tbody').data('data_classes').join(' ') ).find('#sort_by_date,li#date').removeClass('disabled'); // restore orignal body "has" classes
		$('head').find('title').text('Index of: '+ current_location); // change window title back to default
		$('#current_dir_path').find('span').empty().html(current_dir_path);
		if ( $('#tbody').find('.media').length < 1 ) { $body.removeClass('has_media has_audio has_video'); }
		if ( bool === true ) { closeContent(); }
		$('tr.selected.playlist').find('a').click();
		updateStats();
	}
	$('#close_playlist,#close_playlist_btn').on('click', function(e) { e.preventDefault(); e.stopPropagation(); showWarning('closePlaylist',true); }); // true === close all content
	// Close index source preview
	function closeIndexSource() {
		$body.removeClass('has_directory_source');
		$content_pane.removeAttr('data-content').removeAttr('data-loaded'); //
		$content_iframe.removeAttr('src').removeClass('has_content'); // remove iframe src
		$('#title span').empty(); // empty content title
		if ( $('#tbody tr.content_loaded').length === 1 ) { $('#tbody tr.content_loaded').click(); }
		focusSidebar();
	}
	// Close opened font file
	function closeFontFile() {
		$body.removeClass('faded focus_content');
		$content_pane.removeAttr('data-content').find('#glyphs_container').empty();
		$('#font_viewer').remove().end().append( content_font_viewer );
		$('#title span').empty();
		$('tr.content_loaded').click();
	}
	// Close glyph
	function closeGlyph() {
		$('#glyph_viewer').hide().attr('style','');
		$content_pane.attr('data-content','has_font_file');
		$content_font.addClass('has_content');
		scrollThis('glyphs_container','selected');
	}
	// Close all .content elements before opening any new .content from sidebar; leave grid and text editor hidden.
	function closeContent() {
		switch(true) {
			case window.top !== window.self:
				break;
			default: // remove sources, data-content, styles, and classes from #content_pane
				$('#title span').removeAttr('data-after').empty(); // empty content title
				hideGrid(); hideTextEditor(true); // hide grid and texteditor
				$content_pane.removeClass('has_zoom_image has_scaled_image').removeAttr('data-content').removeAttr('data-loaded'); // remove content_pane classes and data
				$content_pane.find('.has_content').removeClass('has_content').removeAttr('src').removeAttr('style'); // remove .content classes, data, and attributes
				$content_font.find('#font_viewer').remove().end().append( content_font_viewer );
 				closeMedia('video');
				$('#cue_sheet_track_list_container_video').removeClass('has_cue_sheet').empty(); // remove video cue sheet menu
				setupContentPDF();
				$('.playlist_entry_container').removeClass('has_content').find('textarea').val('');
		}
	}
	//////// NEW CLOSE BUTTON FUNCTION: replaces OLDcloseContent()
	function closeButton() {
		switch(true) {
			// CLOSE GRIDS & TEXT EDITOR
			case $content_pane.attr('data-content') === 'has_grid': // close grid
				closeGrid();
				if ( $content_pane.hasClass('has_hidden_text_editor') ) { showHiddenTextEditor(); } else { focusSidebar(); }
				break;
			case $content_pane.attr('data-content') === 'has_text_editor': // hide text editor
				hideTextEditor();
				if ( $content_pane.hasClass('has_hidden_grid') ) { showHiddenGrid(); } else { focusSidebar(); }
				break;
			case $body.hasClass('iframe_edited'): // close edited iframe file
				sendMessage('iframe','unloading');
				break;
			// CLOSE FILES AND DIRECTORIES
			case $body.hasClass('has_directory_source'): // close directory source
				closeIndexSource();
				break;
			case $content_pane.hasClass('has_iframe_file') && $content_pane.hasClass('has_iframe_dir'): { // close iframe file and reopen navigated container directory
				showContent('content_iframe_dir',[$content_iframe.attr('data-iframe_file_src'),'source_dir']);
				sendMessage('iframe','focus_iframe');
				break;
				}
			case $content_pane.hasClass('has_iframe_file') && !$content_pane.hasClass('has_iframe_dir'):
			// close iframe file opened from previewed sidebar directory (not navigated directory) and reopen selected sidebar directory
				$content_pane.removeClass('has_iframe_file').removeAttr('data-content');
				// no break;
			case $content_pane.hasClass('has_iframe_dir'): // close navigated iframe directory and reopen selected sidebar directory
				$content_pane.removeClass('has_iframe_dir');
				clickRow($('#tbody tr.selected').attr('id')); // click selected sidebar item
				sendMessage('iframe','focus_iframe');
				break;
			case $content_pane.attr('data-content') === 'has_dir': // close selected sidebar directory
				$('tr.selected:not(.audio)').removeClass('selected content_loaded');
				$content_pane.removeAttr('data-content').removeAttr('data-loaded'); //
				$content_iframe.removeAttr('src').removeClass('has_content'); // remove iframe src
				$('#title span').empty(); // empty content title
				focusSidebar();
				break;
			// CLOSE FONTS & GLYPHS
			case $content_pane.attr('data-content') === 'has_glyph': // close glyph
				showWarning( 'closeGlyph' );
				break;
			case $content_pane.attr('data-content') === 'has_font_file': // close font file preview
				showWarning( 'closeFontFile' );
				break;
			// CLOSE ALL OTHER CONTENT EXCEPT AUDIO
			case $content_pane.attr('data-content') === 'has_ignored': // close ignored content
			case $('#content_container .content').hasClass('has_content'): // close all other content
			case $('#content_image').hasClass('has_content'): // close all other content
				$('tr.selected').removeClass('content_loaded'); // don't remove selected in order to allow sidebar navigation to continue from closed file
				$content_iframe.removeAttr('data-iframe_file_src').removeAttr('data-kind');
				closeContent();
				focusSidebar();
				switch(true) {
					case $content_pane.hasClass('has_hidden_grid'): showGrid(); break;
					case $content_pane.hasClass('has_hidden_text_editor'): showTextEditor(); break;
				}
				break;
			// CLOSE AUDIO & PLAYLISTS
			case $content_pane.hasClass('has_audio'): // close audio
				closeMedia('audio'); focusSidebar();
				break;
			case $body.hasClass('has_playlist'): // close playlist
			case $body.hasClass('has_filelist'): // close filelist
				showWarning( 'closePlaylist' );
				break;
		}
		// show hidden texteditor or grid
	}
	$('#close_btn').on('click', function(e) { e.stopPropagation(); e.preventDefault(); showWarning('closeButton'); $(this).blur(); });
	//***** RESET CONTENT (Reset button or Cmd/Ctrl + R) *****//
	function reloadImage() {
		$content_pane.removeClass('has_zoom_image has_scaled_image').find('#content_image_container,#content_image').removeAttr('style');
		$('#content_image').removeAttr('src');
		$('#tbody').find('.image.selected,.image.content_loaded').find('a').click(); // clicking allows changed content to be reloaded instead of just being reset
	}
	function resetContent() {
		switch(true) {
			case $content_pane.hasClass('has_audio'): // pause and reset media
				$audio_player.prop('currentTime', 0).trigger('pause');
				reloadImage();
				break;
			case $content_pane.attr('data-content') === 'has_video':
				$content_video.prop('currentTime',0).trigger('pause');
				break;
			}
		switch(true) {
			case $content_pane.attr('data-content') === 'has_grid':
				$('#grid_btn').click();
				break;
			case $content_pane.attr('data-content') === 'has_glyph':
				$('#glyph_viewer').css({'width':'100%','height':'100%','background-size':'100%'}).attr('data-scale',1);
				break;
			case $content_pane.attr('data-content') === 'has_font':
				$content_font.css({'font-size':'1em'});
				break;
			case $body.hasClass('has_playlist'):
			case $content_pane.hasClass('has_audio'):
			case $content_pane.hasClass('has_video'):
			case $content_pane.attr('data-content') === 'has_text_editor':
				break; // don't do anything else for audio, video, text editor, playlist content.
			case $content_pane.attr('data-content') === 'has_image':
				reloadImage();
				break;
			case $content_pane.hasClass('has_iframe') || $content_pane.hasClass('has_dir'):
			case $content_pane.attr('data-content') === 'has_iframe' || $content_pane.attr('data-content') === 'has_dir':
				$('#tbody').find('.selected').find('a').click(); // clicking allows changed content to be reloaded instead of just being reset
				break;
			case $content_pane.attr('data-content') === 'has_ignored':
			case $content_pane.attr('data-content') === undefined:
				window.location = window.location.href;
				break;
		}
	}
	$('#reload_btn').on('click', function(e) { e.stopPropagation(); e.preventDefault(); showWarning('resetContent'); $(this).blur().removeClass('reset'); });
	//**********************//
	//***** NAVIGATION *****//
	function firstRowID(class_name) { return ( $('#tbody').find('> tr:visible').filter(class_name).length ? $('#tbody').find('> tr:visible').filter(class_name).first().attr('id') : null ); }
	function lastRowID(class_name) { return ( $('#tbody').find('> tr:visible').filter(class_name).length ? $('#tbody').find('> tr:visible').filter(class_name).last().attr('id') : null ); }
	function prevRowID(class_name) {
		let $selected, row_ID;
		if ( /audio/.test(class_name) ) { $selected = $('tr.audio.selected,tr.audio_loaded'); } else { $selected = $('#tbody').find('.selected'); }
		switch(true) {
			case !$selected.length:
			case !$selected.prevAll('tr:visible:not(.disabled):not(.unchecked)').filter(class_name).length:
				row_ID = $('#tbody').find('> tr:visible:not(.disabled):not(.unchecked)').filter(class_name).last().attr('id'); // select last item if nothing selected or selected is first item
				break;
			default:
				row_ID = $selected.prevAll('tr:visible:not(.disabled):not(.unchecked)').filter(class_name).first().attr('id');
		}
		return row_ID;
	}
	function nextRowID(class_name,bool) { // if nothing selected, or if no next row with class_name, return first row with class_name, else return next row with class_name; bool --> autoplay audio
		let $selected, row_ID;
		if ( bool === 'true' ) { $selected = $('tr.audio.selected,tr.audio_loaded'); class_name === 'audio'; } else { $selected = $('#tbody').find('tr.selected'); }
		switch(true) {
			case !$selected.length:
			case !$selected.nextAll('tr:visible:not(.disabled):not(.unchecked)').filter(class_name).length: //
				row_ID = $('#tbody').find('> tr:visible:not(.disabled):not(.unchecked)').filter(class_name).first().attr('id'); // select last item if nothing selected or selected is first item
				break;
			default:
				row_ID = $selected.nextAll('tr:visible:not(.disabled):not(.unchecked)').filter(class_name).first().attr('id');
		}
		return row_ID;
	}
	// get selected row id
	function selectRowID(class_name,key,bool) { // bool === true --> autoplay media
		let id = '';
		switch(key) {
			case 'ArrowUp':		id = prevRowID('.dir,.file');		break;
			case 'ArrowLeft':	id = prevRowID(class_name);			break;
			case 'ArrowRight':	id = nextRowID(class_name,bool);	break;
			case 'ArrowDown':	id = nextRowID('.dir,.file');		break;
		}
		return id;
	}
	// NAVIGATION: Menu Arrow Navigation
	function menuNavigation(key) {
		let $selected_menu_item = $('#menu').find('ul li.selected');
		switch(key) {
		case 'ArrowUp':
			switch(true) {
				case $('#menu').find('.hovered').length > 0: // if submenu visible
					switch(true) { // if no menu item selected, select last submenu item, else select previous submenu item
						case !$selected_menu_item.length:		$('#menu').find('ul li:last-of-type').addClass('selected'); break;
						default: $selected_menu_item.removeClass('selected').prevAll('li:visible').first().addClass('selected');
					}
					break;
				case !$('#menu').find('.selected').length:		$('#menu').find('> li:last-of-type').addClass('selected'); break; // select last item
				default: $('#menu').find('.selected:not(.hovered)').removeClass('selected').prevAll('li:visible').first().addClass('selected');
				}
			break;
		case 'ArrowDown':
			switch(true) {
				case $('#menu').find('.hovered').length > 0: // if submenu visible
					switch(true) { // if no menu item selected, select first submenu item, else select next submenu item
						case !$selected_menu_item.length:		$('#menu').find('ul li:first-of-type').addClass('selected'); break;
						default: $selected_menu_item.removeClass('selected').nextAll('li:visible').first().addClass('selected');
					}
					break;
				case !$('#menu').find('.selected').length:		$('#menu').find('> li:first-of-type').addClass('selected'); break;
				default: $('#menu').find('.selected:not(.hovered)').removeClass('selected').nextAll('li:visible').first().addClass('selected');
				}
			break;
		case 'ArrowLeft':
			switch(true) {
				case !$('#menu').find('.selected').length:		$('#menu').find('> li:last-of-type').addClass('selected'); break;
				case $('#menu').find('li.selected').hasClass('hovered'): $('#menu').find('.hovered').removeClass('hovered'); $('#menu').find('ul li').removeClass('selected'); break;
			}
			break;
		case 'ArrowRight':
			switch(true) {
				case !$('#menu').find('.selected').length:		$('#menu').find('> li:first-of-type').addClass('selected'); break;
				case $('#menu').find('li.selected').hasClass('has_submenu') && !$('.submenu').find('.selected').length:
					$('#menu').find('.selected').addClass('hovered').find('ul li:first-of-type').addClass('selected'); break;
			}
			break;
		}
	}
	// NAVIGATION: select GRID items by left/right arrow keys @ arrowNavigation();
	function gridNavigation(elId,key) {
		const $container_el = $(elId);
		let $selected = $container_el.find('> .selected');
		let grid_item_id; // = grid item data-id = corresponding dir_list item id.
		let row_length = 0; // $content_grid.hasClass('has_grid') || $('#content_font').hasClass('has_font_grid')
			row_length = ( Math.round( $container_el.innerWidth() / $container_el.find('> div').outerWidth()) - 1 );
		switch(true) {
			case $selected.length === 0: // nothing selected
				switch(true) {
					case key === 'ArrowRight':	case key === 'ArrowDown':	$container_el.find('> div').first().addClass('selected');	break;
					case key === 'ArrowLeft':	case key === 'ArrowUp':		$container_el.find('> div').last().addClass('selected');	break;
				}
				grid_item_id = $container_el.find('.selected').attr('data-id');
				break;
			case key === 'ArrowUp':
				switch(true) {
					case $selected.prevAll().eq(row_length).length === 1:		grid_item_id = $selected.prevAll().eq(row_length).attr('data-id');	break;
					case $container_el.find('> div').length - 1 === row_length:	gridNavigation(elId,'ArrowLeft'); break; // for single grid row, select prev item
					default: grid_item_id = $container_el.find('> div').last().attr('data-id');		break;
				}
				break;
			case key === 'ArrowDown':
				switch(true) {
					case $selected.nextAll().eq(row_length).length === 1:		grid_item_id = $selected.nextAll().eq(row_length).attr('data-id');	break;
					case $container_el.find('> div').length - 1 === row_length:	gridNavigation(elId,'ArrowRight');	break; // for single grid row, select next item
					default: grid_item_id = $container_el.find('> div').first().attr('data-id');	break;
				}
				break;
			case key === 'ArrowLeft':
				switch(true) {
					case $selected.prev().length === 1:		grid_item_id = $selected.prev().attr('data-id'); 	break;
					default: grid_item_id = $container_el.find('> div').last().attr('data-id'); 				break;
				}
				break;
			case key === 'ArrowRight':
				switch(true) {
					case $selected.next().length === 1:		grid_item_id = $selected.next().attr('data-id'); 	break;
					default: grid_item_id = $container_el.find('> div').first().attr('data-id'); 				break;
				}
				break;
		}
		selectThis(grid_item_id);
		switch(true) {
			case $content_pane.attr('data-content') === 'has_glyph': $('.glyph_container.selected .glyph').click(); break; // show the selected glyph
			case $content_pane.hasClass('has_hidden_grid'): $('#content_grid > div[data-id="'+ grid_item_id +'"]').click(); break;
		}
	}
	// NAVIGATION: FONTS and IMAGES by prev/next buttons
	$content_pane.on( 'click','#prev_btn, #next_btn', function(e) {
		e.stopPropagation(); e.preventDefault();
		let key = $(this).attr('id') === 'prev_btn' ? 'ArrowLeft' : 'ArrowRight';
		switch(true) {
			case $content_pane.attr('data-content') === 'has_font_viewer':		gridNavigation('#glyphs_container',key); break;
			default:	clickRow( selectRowID('.font,.image',key));
		}
		if ( $('body').hasClass('focus_content') ) { focusContent(); }
	});
	// NAVIGATION: Audio by prev/next audio buttons
	$('.prev_next_track_btn').on('click',function() { let key = ( $(this).attr('id') === 'prev_track' ? 'ArrowLeft' : 'ArrowRight' ); playPrevNextMediaTrack(key); });
	function upDownArrowNavigation(e) {
		switch(true) {
			case ( /a|button|input|select|textarea/.test(document.activeElement.tagName.toLowerCase() ) && window.top !== window.self ):
			case ( /text_preview|html_preview/.test(document.activeElement.id) ):
				return; // don't navigate if text editor previews are focussed
			default:
				document.activeElement.blur();
		}
		e.preventDefault();
		document.activeElement.blur(); $('body').focus(); // Need this to able to select grid items after clicking close button (or other buttons).
		let row_ID = selectRowID('.dir:visible,.file:visible',e.key);
		let row = $(document.getElementById(row_ID));
		let $selected = $('#tbody').find('.selected');
		switch(true) {
			case cmdKey(e) && e.key === 'ArrowUp': // Cmd/Ctrl + up arrow
				switch(true) {
					case window.self !== window.top:	$('#iframe_body #parent').find('a').click(); break; // go to iframe parent
					case window.self === window.top && $('body').hasClass('focus_content'): // fallback for go to iframe parent in case top is incorrectly focused
														sendMessage('iframe','open_iframe_parent_dir'); break;
					default:							showWarning( 'clickThis', $('#parent_dir_nav').attr('id') ); break; // go to parent (with warning)
				}
				break;
			case cmdKey(e) && e.key === 'ArrowDown': // Cmd/Ctrl + down arrow
				switch(true) {
					case window.self === window.top && $('body').hasClass('focus_content'):		focusContent('content_iframe',e); break; // select first item if nothing selected in iframe
					case window.self === window.top && $selected.hasClass('file') && !$selected.hasClass('link'): break; // do nothing for #top files
					case window.self === window.top && $selected.hasClass('dir') && $selected.hasClass('app') && $settings.apps_as_dirs === false: break; // do nothing for apps if not viewing as dirs
					default: 	$selected.find('a').trigger('dblclick'); // else double-click directories and all iframe items to open them
					}
				break;
			case $body.hasClass('has_directory_source'): // if viewing directory source, arrows will reopen selected sidebar item
				if ( $('#tbody .content_loaded').length > 0 ) { clickRow( $('#tbody .content_loaded').attr('id') ); } else { clickRow( row_ID ); }
 				scrollThis('tbody','selected');
 				break;
			case cmdKey(e) && window.self !== window.top: // iframe && cmdKey
				switch(true) {
					case $('#iframe_body #dir_list').length === 0:
						break;
				}
				break;
 			case window.top === window.self && $('body').hasClass('focus_content'):
				$content_iframe.focus();
 				focusContent('iframe',e);
 				sendMessage('iframe','iframe_arrow_navigation','',e.key);
 				$('#iframe_body a').click();
 				break;
			default: // click prev/next item
				selectThis(row_ID); // don't use $selected after this
				switch(true) {
					case row.hasClass('audio'): 	break; // only select row
					default: showContent(row_ID); // otherwise show content
				}
				if ( $('.selected').length ) { scrollThis('tbody','selected'); }
			}
	}
	// NAVIGATION: Prev/Next Audio or Prev/Next File of same data-kind by arrow left/right
	function leftRightArrowNavigation(e) {
		switch(true) {
			case ( /a|button|input|select|textarea/.test(document.activeElement.tagName.toLowerCase() ) && window.top !== window.self ): // no break
			case ( /text_preview|html_preview/.test(document.activeElement.id) ):
				return; // don't navigate if text editor previews are focussed
			default:
				// document.activeElement.blur(); // $('tr.selected').find('a').focus();
		}
		switch(true) {
			case cmdKey(e):
				switch(true) {
					case e.key === 'ArrowRight' && $('tr.selected').hasClass('dir'): $('tr.dir.selected').find('.has_icon_before_before').click(); break; // open subdirectory
					case e.key === 'ArrowLeft' && $('tr.selected').hasClass('has_subdirectory'):  closeSubdirectory($('tr.dir.selected').attr('id') ); break; // close subdir
					case e.key === 'ArrowLeft' && !$('tr.selected').hasClass('has_subdirectory') && $('tr.has_subdirectory').length > 0:
					    clickRow($('tr.selected').prevAll('.has_subdirectory').first().attr('id')); break; // jump to parent directory
					default: clickRow($('tr:visible').first().attr('id')); // jump to first visible item
				}
 				scrollThis('tbody','selected');
 				break;
			case cmdAltKey(e) && e.key === 'ArrowLeft': case cmdAltKey(e) && e.key === 'ArrowRight': // don't start audio tracks when changing tabs
				break;
			default:
				e.preventDefault();
				let $selected = $('#tbody').find('.selected');
				switch(true) { // L/R Arrow + Alt + Shift
					case e.altKey && e.shiftKey:
					case e.altKey && !e.metaKey && !e.ctrlKey: { // Skip audio 30s/10s: Opt-Shift-Arrow/Opt-Arrow
						let args = [e.key];
						if ( e.shiftKey ) { args.push(30); } else { args.push(10); }
						switch(true) {
							case window.top !== window.self:	sendMessage('top','mediaSkip','mediaSkip',args); break;
							default: 							mediaSkip(e);
						}
						break;
					}
					case $body.hasClass('has_directory_source'): // if viewing directory source
						switch(true) {
							case $('#tbody .content_loaded').length > 0:	clickRow( $('#tbody .content_loaded').attr('id') ); break;
							default: 										clickRow( selectRowID('.dir,.file',e.key) );
						}
						scrollThis('tbody','selected');
						break;
					default:
						switch(true) {
							case $selected.length === 0: 		clickRow( selectRowID('.dir,.file',e.key) );	break; // if nothing selected, click first/last row
							case $selected.hasClass('media') && $body.hasClass('play_all_media'): 				// no break; play all media
							case $selected.hasClass('audio'):	playPrevNextMediaTrack(e.key);					break; // play prev/next media track
							default: 					 		clickRow( selectRowID('.'+ $selected.attr('data-kind'),e.key) ); // click prev/next item with same data-kind
																if ( $selected.hasClass('video') ) { playMedia('play'); }
						}
						scrollThis('tbody','selected');
				}
		}
	}
	// NAVIGATION: AUDIO tracks by arrow left/right @ leftRightArrowNavigation() & button click; // handle shuffle or loop play, as well as normal continuous playback after end of track with ArrowRight
	function playPrevNextMediaTrack(key,bool) { // bool === 'true' if from initMedia
		let track_row_id, $selected_media;
		switch(true) {
			case bool === 'true': // autoplay media (if selected audio !== playing audio, select selected audio, else select loaded media)
				$selected_media = ( $('#tbody tr.audio.selected').length === 1 && $('#tbody tr.audio_loaded') !== $('#tbody tr.audio.selected') ? $('#tbody tr.audio.selected') : $('#tbody tr.audio_loaded,#tbody tr.video.content_loaded') );
				break;
			default: $selected_media = $('#tbody tr.media.selected'); // normal l/r arrow play media
		}
		let media_class = ( $('body').hasClass('play_all_media') ? '.media:not(.ignored)' : '.'+ $selected_media.attr('data-kind') +':not(.ignored)' ); // if play all media, use .media, else use selected
		let selected_row_id = $selected_media.attr('id'), last_row_id = lastRowID( media_class );
		switch(true) {
			case $selected_media.length === 1 && !/loaded/.test($selected_media[0].classList.value): // if selected media track is not playing, click and play
				switch(true) {
					case window.self !== window.top:	$selected_media.find('a').trigger('dblclick'); sendMessage('top','iframe_play_pause_media'); break;
					default:
						if ( media_class === 'audio' ) { showAudio( selected_row_id ); } else { clickRow( selected_row_id ); }
						playMedia('play');
				}
				break;
			case $('.audio_loaded').length === 0 && $('.video.content_loaded').length === 0: // Arrow L/R selects first/last media file if nothing selected
				clickRow( selectRowID('.audio_loaded',key) ); playMedia('play');
				break;
			case $selected_media.length === 1: // if an audio file is loaded...
				switch(true) {
					case $body.hasClass('shuffle_media'): // and if shuffle play is checked...
						track_row_id = $audio_player.data('shufflelist').pop(); // remove track from shuffleTrackList
						switch(true) {
							case track_row_id !== undefined: // if shuffle list is not empty...
								if ( document.getElementById(track_row_id).classList.contains('audio') ) { showAudio( track_row_id ); } else { clickRow( track_row_id ); } playMedia('play'); break; // load media and play
							case track_row_id === undefined: // else if end of shufflelist...
								updateShuffleList();
								switch(true) {
									case $body.hasClass('loop_media'):	playMedia('play'); break; // and if loop audio, update the shufflelist and play
									default: 							clickRow( $('tr.media:not(.ignored)').first().attr('id') ); // else just load the first track
								}
							}
						break;
					default: // ordinary playback: play prev/next track
						if ( $selected_media.hasClass('audio') ) { showAudio( selectRowID( media_class,key,bool ) ); } else { clickRow( selectRowID( media_class,key ) ); } // show audio or click video
						switch(true) {
							case window.self !== window.top:
								$selected_media.find('a').trigger('dblclick');  sendMessage('top','iframe_play_pause_media'); break; // show iframe audio
							case key === 'ArrowRight' && selected_row_id === last_row_id && bool === 'true': // loop audio: autoplay first track at end of last track
								if ( $body.hasClass('loop_media') ) { playMedia('play'); }
								break;
							default:
								playMedia('play'); break; // play next track, don't play first track after last
						}
						break;
			}
			break;
		}
 		scrollThis('tbody','audio_loaded');
 		scrollThis('tbody','.video.content_loaded');
 	}
	// NAVIGATE directory index items by arrow up/down or left/right keys, with/without grid @ indexNavigation()
	function arrowNavigation(e) {
		if ( $('body').hasClass('focus_content') ) { focusContent(); }
		switch(true) {
			case window.top !== window.self && document.activeElement.getAttribute('id') === 'iframe_body' && $('#iframe_body').find('#dir_list').length === 0: // allow arrows to work normally in iframes (but not iframe dirs)
			case ( /img|textarea|embed/.test( document.activeElement.tagName.toLowerCase() ) ): // allow arrows to work normally in images and textareas
			case document.activeElement.hasAttribute('contentEditable'): // allow arrows to work normally in contentEditable elements
				break;
			default:
				e.preventDefault(); // otherwise prevent default arrow behavior
				document.activeElement.blur(); // Need this to able to select grid items after clicking close button (or other buttons).
			case $('body').hasClass('has_menu'): // menu navigation
				if ( window.top !== window.self ) { sendMessage('top','menu_navigation','menuNavigation',e.key); } else { menuNavigation(e.key); }
				break;
			case $content_pane.attr('data-content') === 'has_grid'  && $('body').hasClass('focus_content') 		 && !cmdKey(e): // navigate grid
			case $content_pane.attr('data-content') === 'has_image' && $content_pane.hasClass('has_hidden_grid') && !cmdKey(e): // navigate hidden grid
			case $content_pane.attr('data-content') === 'has_font'  && $content_pane.hasClass('has_hidden_grid') && !cmdKey(e): // navigate hidden grid
				gridNavigation('#content_grid',e.key);
				if ( !$content_pane.hasClass('has_hidden_grid') ) { scrollThis('content_grid','selected'); }
				scrollThis('tbody','selected');
				break;
			case $content_pane.attr('data-content') === 'has_font_file' && !cmdKey(e): // navigate font file glyphs
			case $content_pane.attr('data-content') === 'has_glyph' && !cmdKey(e): // navigate font file glyphs
				if ( $('body').hasClass('focus_content') ) {
					gridNavigation('#glyphs_container',e.key);
					scrollThis('content_container','selected');
				} else {
					showWarning('warning_close_font','warning_btn_cancel'); // show close font warning if sidebar focused
				}
				break;
			case e.key === 'ArrowUp' || e.key === 'ArrowDown': // up/down arrow navigation
				upDownArrowNavigation(e);
				break;
			case e.key === 'ArrowLeft' || e.key === 'ArrowRight': { // left/right arrow navigation
				leftRightArrowNavigation(e);
				break;
			}
		}
	}
	// NAVIGATION: by typed string
	var str = '';
	function timeoutID() { return window.setTimeout( function() { str = ''; }, 1500 ); }
	function alphaNav(e) { // Select Dir_List row by typed string; Todo: select next row by nearest letter
		switch(true) {
			case document.activeElement.tagName.toLowerCase() === 'textarea' || document.activeElement.getAttribute('contentEditable') === true: break;
			default:
				let timer = timeoutID();
				if ( typeof timer === 'number' ) { window.clearTimeout( timer ); timer = 0; } // id
				timeoutID();
				str += e.key;
				str = str.toLowerCase();
				if ( $('#dir_list').find('td.name[data-name^="'+ str +'"]').length ) {
					$('#dir_list').find('td.name[data-name^="'+ str +'"]').first().find('a').click();
					scrollThis('tbody','selected');
					// } else {
					// null; // replace this with some sort of fuzzy match function? TBD
				}
		}
	}
	//***** END NAVIGATION *****//

	// SELECT ROW on click and set classes for $content_pane
	function selectThis(row_ID) {
		let row = $(getElById(row_ID));
		switch(true) {
			case row.hasClass('disabled'):
				break;
			case $content_pane.attr('data-content') === 'has_grid':
			case $content_pane.hasClass('has_hidden_grid'): {// Select corresponding grid item
				const $grid_selected = $content_grid.find('> div[data-id="'+ row_ID +'"]');
				row.addClass('selected').siblings().removeClass('selected hovered');
				$grid_selected.addClass('selected').siblings().removeClass('selected');
				break;
			}
			case row.hasClass('audio'):
				row.addClass('selected').siblings().removeClass('selected');
				break;
			default:
				$body.removeClass('has_directory_source');
				row.addClass('content_loaded').siblings().removeClass('content_loaded');
				row.addClass('selected').siblings().removeClass('selected hovered'); // remove classes from sibling, but leave .audio with playing
		}
	}
	// CLICK element by id
	function clickThis(id) { let el = $(document.getElementById(id)); if ( el.find('a').length > 0 ) { el.find('a').click(); } else { el.click(); } }
	// CLICK Row to show content
	function clickRow(id) { selectThis(id); showContent(id); }
	// On click row, play/pause media or clickRow
	$('#top #tbody').on('click','tr', function(e) {
		e.preventDefault(); e.stopPropagation();
		focusSidebar();
		switch(true) {
			case $(this).hasClass('audio'):
				if ( !$(this).hasClass('selected') ) { showContent($(this).attr('id')); } else { playPauseMedia(); }
				break;
			case $(this).hasClass('video'):
				if ( !$(this).hasClass('selected') ) { showWarning( 'clickRow', $(this).attr('id') ); } else { playPauseMedia(); }
				break;
			default: showWarning( 'clickRow', $(this).attr('id') );
		}
	});

	// SUBDIRECTORIES
	function openSubdirectory(parent) { // use the clicked subdirectory href as src for utility iframe, which loads that directory, processes the index and sends it back to the top iframe
		let this_id = parent.attr('id'), parent_link = parent.find('a').attr('href'), level = Number(parent.attr('data-level')) + 1;
		let content_iframe_utility_src = parent_link + getLinkQueries('dir') + '&parent_id='+ this_id +'&subdirectory=true&level='+ level;
		$('#content_iframe_utility').attr('src',content_iframe_utility_src );
		parent.addClass('dir_list_subdir_loading'); // removed when content_iframe_utility sends loaded message with subdirectory data
	}
	function closeSubdirectory(id) {
		if ( id === undefined ) { // close all subdirectories
			$('#tbody tr.dir').removeClass('has_subdirectory dir_list_subdir_loading');
			$('#tbody').find('tr[id*="_"]').remove(); // remove any row whose id contains an underscore (= subdirectory row)
			closeContent();
		} else {
			document.getElementById(id).classList.remove('has_subdirectory');
			$('#tbody').find('tr').each(function() {
				if ( $(this).attr('id').startsWith(id + '_') ) { $(this).remove(); } // remove all rows whose id begins with the subdirectory parent id
			});
		}
		updateStats();
	}
	$('#tbody').on('click','tr.dir span.has_icon_before_before',function(e) { // open/close subdirectories
		e.preventDefault(); e.stopPropagation(); e.stopImmediatePropagation();
		let $parent = $(this).closest('tr');
		switch(true) {
			case ( /\.trashes|\.temporaryitems|\.spotlight-v\d+/.test($parent.find('.name').attr('data-name') ) ): $parent.removeClass('dir_list_subdir_loading'); break;
			default:
				selectThis($parent.attr('id'));
				if ( $parent.hasClass('has_subdirectory') ) { closeSubdirectory( $parent.attr('id') ); } else { openSubdirectory($parent); }
				if ( window.top === window.self ) 	{ focusSidebar(); } else { document.activeElement.blur(); $('body').focus(); }// else { focusSidebar(); }
		}
	});
	// DOUBLE-CLICK Row to open directory
	function doubleClickRow(args) { // row.dir only
		let row = document.getElementById(args[0]);
		if ( row.classList.contains('dir') && row.classList.contains('invisible') && row.classList.contains('ignored') ) { return; } // don't attempt to open ignored invisible dirs (chiefly system dirs)
		let id = args[0].slice(args[0].indexOf('-') + 1), href = args[1];
		let query_str = decodeURIComponentSafe(window.location.search);
		if ( query_str === '' ) { query_str = '?'; }
		if ( query_str.indexOf('history') !== -1 ) {
			query_str = query_str.replace(/&selected=\d+/,'').replace(/&history=/,'&history='+ id +'+');
		} else {
			query_str = query_str.replace(/&selected=\d+/,'') + '&history='+ id;
		}
		window.location = href + query_str;
	}
	$('#top').on('dblclick', '#tbody tr.dir,#tbody tr.link,#tbody tr.playlist', function(e) {
		e.preventDefault(); e.stopPropagation();
		switch(true) {
			case $(this).hasClass('link'):
				if ( $protocol === 'file:' ) { sendMessage('iframe','open_link_file','',$(this).attr('data-ext')); } else { openLink($(this).attr('data-ext')); }
				break;
			case $(this).hasClass('playlist'): {
				let playlist_data = $(this).data('playlist');
				openPlaylist('','',playlist_data);
				}
				break;
			default:
				showWarning('doubleClickRow', [$(this).attr('id'), $(this).find('a').attr('href')] );
		}
	});
	// click content header or audio to remove faded body class
	$('#sidebar_title,#sidebar_buttons,#sidebar,#sorting .sorting').on('click',function() { focusSidebar(); });
	// CLICK grid item
	$content_grid.on('click','div', function(e) {
		e.preventDefault();
		let id = $(this).attr('data-id');
		$(this).addClass('selected').siblings().removeClass('selected');
		hideGrid();
		getElById(id).click();
	});
	// HOVER Grid Item and highlight dir_list row
	$content_grid.on('mouseenter','> div:not(.selected)',function() {
		document.getElementById(this.getAttribute('data-id')).classList.add('hovered');
	}).on('mouseleave','> div:not(.selected)',function() {
		document.getElementById(this.getAttribute('data-id')).classList.remove('hovered');
	});
	// HOVER Dir_list_row: highlight corresponding grid item
	$dir_list_body.on('mouseenter','> tr', function() {
		if ( $content_pane.attr('data-content') === 'has_grid' ) { $content_grid.find('> div[data-id="'+ $(this).attr('id') +'"]').addClass('hovered'); }
	}).on('mouseleave','> tr', function() {
		if ( $content_pane.attr('data-content') === 'has_grid' ) { $content_grid.find('> div[data-id="'+ $(this).attr('id') +'"]').removeClass('hovered'); }
	});
	// HOVER Footer Links: Fade dir_list
	$('#footer_links').on('mouseenter',function() {
		$('body:not(.has_menu), body:not(.has_menu_parents)').addClass('faded');
	}).on('mouseleave',function() {
		$('body:not(.has_menu), body:not(.has_menu_parents)').removeClass('faded');
	});
	// HOVER Stats Items: highlight dir_list items
	$('#tfoot').on('mouseenter','#stats_details tr, #stats_summary_detailed_dirs, #stats_summary_detailed_files', function() {
		this.classList.remove('file','media');
		let this_class = '.'+ Array.from(this.classList).join('.');
		switch(true) {
			case $(this).attr('id') === 'stats_summary_detailed_dirs':	this_class = '.dir';	break;
			case $(this).attr('id') === 'stats_summary_detailed_files':	this_class = '.file';	break;
			// case /_/.test(this_class): 									this_class = this_class.replace('_','.'); break;
			case this_class === '.dir':									this_class = '.dir:not(.ignored):not(.invisible):not(.app)'; break;
			case this_class === '.dir.app':								this_class = '.dir.app:not(.ignored):not(.invisible)'; break;
		}
		$('#tbody').find(this_class).addClass('hovered'); // add the hovered class
		if ( $('#tbody .hovered').length > 0 ) { $('#tbody .hovered')[0].scrollIntoView({ behavior:'smooth', block:'start', inline:'nearest' }); } // scroll first matching element into view
	}).on('mouseleave','tr',function() {
		$('#tbody tr').removeClass('hovered');
	});
	// END CLICK & HOVER EVENTS

	//***** AUTOLOAD CONTENT: index files or files from the file shortcut list *****//
	function autoLoadFile() {
		if ( window.self === window.top && getSearchParams().has('selected') ) { // add selected class
			$('#tbody tr[id="rowid-'+ Number(getSearchParam("selected")) +'"]').addClass('selected');
		}
		let $selected = $('tr.selected');
		if ( $selected.length === 0 ) { removeSearchParam('selected'); } // remove selected searchParam if item not found
		switch(true) {
			case $selected.length === 1 && $selected.hasClass('local'):
			case window.self !== window.top: // do nothing for iframes
				break;
			case getSearchParams().has('file'): {// load files (from bookmark or url)
					let $file = $('td.name span:contains("'+ decodeURIComponentSafe(getSearchParam('file')) +'")');
					clickRow( $file.closest('tr').attr('id') );
					removeSearchParam('file');
				}
				break;
			case $('body').hasClass('has_audio') && getSearchParam('autoload_media') === 'true': 	// load audio; must be above next case
				// showAudio( $('.audio').first().attr('id'),'', 'true' );							// load audio
				clickRow( $('.audio').first().attr('id') );											// load audio
				autoLoadCoverArt(); // load image
				break;
			case $('body').hasClass('has_video') && getSearchParam('autoload_media') === 'true':	clickRow( firstRowID('.video') );	break; // load video (if no audio)
			case $('body').hasClass('has_playlist'): case $('body').hasClass('has_filelist'):		break; // do nothing for playlists and filelists ... but what about autoload media?
			case $selected.length === 1: showContent($selected.attr('id')); 						break;
		}
		if ( $selected.length === 1 ) { clickRow( $selected.attr('id')); }							// click selected history item --> replaces auto-loaded cover art
		if ( getSearchParam('autoload_index_files') !== 'false' && $('tr.file.htm').find( 'a[href*="/index."]').length > 0 ) { // else load index file
			clickRow($('tr.file.htm').find('a[href*="/index."]').closest('tr').attr('id'));
		}
		if ( $('tr.selected').length === 1 ) { scrollThis('tbody','selected'); }
	}
	// get cover art names
	function getImageNames() {
		let images = $dir_list_body.find('.image'), image_names = [], image_id, image_name;
		for ( let i = 0; i < images.length; i++ ) {
			image_id = images.eq(i).attr('id');
			image_name = images.eq(i).find('.name').attr('data-name');
			image_name = image_name.slice(0,image_name.lastIndexOf('.') ); // remove extension
			image_names.push({'id':image_id,'name':image_name}); // add id and name
		}
		return image_names;
	}
	// get cover art id
	function getCoverArtID() {
		const cover_names = ['cover','front','album','jacket','sleeve','cd','disc','insert','liner','notes'];
		const image_names = getImageNames();
		let id, exact_match, match, cover_name;
		for ( cover_name of cover_names ) { // test available image names against cover names
			exact_match = image_names.filter( el => el.name === cover_name ); // check for exact match (w/o extension)
			match = image_names.filter( el => el.name.indexOf(cover_name) > -1 ); // check for partial match
			if ( exact_match.length > 0 ) { return id = exact_match[0].id; }
			else if ( match.length > 0 ) { return id = match[0].id; }
		}
		if (id === undefined ) { return id = image_names[0].id; } // if no matches, return first image id
	}
	// Autoload Cover Art
	function autoLoadCoverArt() { // autoload cover art for audio if dir contains audio and images, and audio is loaded and non-image content is not loaded
		if ( !$('body').hasClass('has_images') ) { return; } // do nothing if no images found
		let cover_ID = getCoverArtID();
		if ( cover_ID !== undefined ) {
			let row = getElById(cover_ID);
				row.addClass('content_loaded');
			$content_pane.attr('data-content','has_image').find('#content_image').addClass('has_content').attr('src',row.find('a').attr('href'));
			$('#title span').empty().html(decodeURIComponentSafe(row.find('.name a span').text() ) ); // name
			setImageDimensions();
		}
		let selected_ID = ( getSearchParam('selected').length > 0 ? 'rowid-'+ getSearchParam('selected') : undefined);
		if ( selected_ID !== undefined ) { document.getElementById(selected_ID).classList.add('selected'); $('.media').removeClass('selected'); }

	}
	//***** KEYBOARD EVENTS *****//
	function metaKey(e)			{ return ( navigator.platform.match('Mac') ? e.metaKey && !e.ctrlKey : e.ctrlKey); }
	function cmdKey(e)			{ return ( metaKey(e) && !e.altKey && !e.shiftKey ); }
	function cmdAltKey(e)		{ return ( metaKey(e) && e.altKey && !e.shiftKey ); }
	function cmdShiftKey(e)		{ return ( metaKey(e) && !e.altKey && e.shiftKey ); }

	$('#top, #iframe_body').on('keydown', function(e) {
		const $selected = ( $('#content_pane').attr('data-content') === 'has_font_file' ? $('.glyph_container.selected .glyph') : $('#tbody').find('.selected') );
		switch(true) { // Disable all keydown events except return and tab when help or warning is shown, or when textarea is focused
			case document.activeElement.hasAttribute('contentEditable') && !/Escape|Tab/.test(e.key) && !( cmdKey(e) && e.key === 'w'):
			case ( /button|input|select|textarea/.test(document.activeElement.tagName.toLowerCase() ) && !/escape|tab|shiftkey|metakey|altkey/.test(e.key.toLowerCase()) ):
			case ($('body').hasClass('has_warning') || $('body').hasClass('has_help') ) && !( cmdKey(e) || metaKey(e) || (/shiftkey|tab|enter|escape/.test(e.key.toLowerCase()) ) ):
			return;
		}
		// MAIN KEYDOWN EVENTS
		switch ( e.key ) {
		case 'shiftKey':
			switch(true) {
				case $('body').hasClass('has_warning') || $('body').hasClass('has_help'):
					if (e.key !== 'Enter' && e.key !== 'Tab') { e.preventDefault(); return false; }
					break;
			}
			break;
		case 'ArrowUp': case 'ArrowDown': case 'ArrowLeft': case 'ArrowRight':
			switch(true) {
				case $('tr.selected').hasClass('link') && cmdKey(e) && e.key === 'ArrowDown': // webloc or url file
				case $('tr.selected').hasClass('playlist') && cmdKey(e) && e.key === 'ArrowDown': // webloc or url file
					$('tr.selected').dblclick();
					break;
				default: 	showWarning( 'arrowNavigation',e ); // arrow navigation
				}
			break;
		case ' ': // space
			switch(true) {
				case $('#content_pane').hasClass('has_audio') || $('#content_pane').attr('data-content') === 'has_video': // Play/pause media (space bar)
					e.preventDefault(); e.stopPropagation(); playPauseMedia(); break;
				case window.top !== window.self && $('tr.audio_loaded').length === 1:
					e.preventDefault(); e.stopPropagation(); sendMessage('top','iframe_play_pause_media'); break;
				default: 	alphaNav(e);
			}
			break;
		case 'Enter': // Open directories (or ignored)
			switch(true) {
				case $('body').hasClass('has_warning') || $('body').hasClass('has_help'):
					e.preventDefault();
					$('button.focus, button:focus').click(); // click focused warning button in #top or #iframe
					break;
				case window.self !== window.top: // if iframe...
					switch(true) {
						case $('body').hasClass('has_menu'):
							sendMessage('top','clickMenu'); // close main menu
							break;
						case $('tr.selected').hasClass('dir') && cmdKey(e):
						case $('tr.selected').hasClass('file') && cmdKey(e): // open iframe dir or file
						case $('tr.selected').hasClass('link') && cmdKey(e): // webloc or url file
							$('tr.selected').find('a').trigger('dblclick');
							break;
						case !$('.audio.selected').hasClass('audio_loaded'):
							$('.audio.selected').find('a').trigger('dblclick');
							break;
						case $('.audio_loaded').length === 1 && !$('.selected').hasClass('audio_loaded'): // play/pause media
							e.preventDefault(); e.stopPropagation(); playPauseMedia();
							break;
					}
					break;
				case $('body').hasClass('has_menu'):
					e.preventDefault(); clickMenu(); sendMessage('iframe','close_menu'); // click selected menu item
					break;
				case $selected.hasClass('app') && $settings.apps_as_dirs === false: // don't open app folders
					break;
				default:
					switch(true) {
						case $selected.hasClass('.disabled'):
						case $content_pane.attr('data-content') === 'has_text_editor':
							break;
						case $selected.hasClass('audio') && !$selected.hasClass('audio_loaded'): // load selected audio file
							showAudio($('.audio.selected').attr('id'));
							break;
						case $selected.hasClass('media'): // else play/pause playing media
							e.preventDefault(); e.stopPropagation(); playPauseMedia();
							break;
						case $selected.hasClass('link'):
						case $selected.hasClass('dir'): // else open dir
						case $('tr.selected').hasClass('link') && cmdKey(e): // webloc or url file
						case $('tr.selected').hasClass('playlist') && cmdKey(e): // webloc or url file
							$selected.find('a').trigger('dblclick');
							break;
						default:	$selected.click();
					}
			}
			break;
			// Alphabetical navigation
		case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': case 'G': case 'H': case 'I': case 'J': case 'K': case 'L': case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R': case 'S': case 'T': case 'U': case 'V':         case 'X': case 'Y': case 'Z':
		case 'a': case 'b': case 'c':					 case 'f':		   case 'h':		   case 'j': case 'k': case 'l': case 'm': case 'n':		   case 'p': case 'q':		   case 's': case 't': case 'u': case 'v':		   case 'x': case 'y': case 'z':
		case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9':					 case '~': case '!': case '@': case '#': case '$': case '%': case '^': case '&': case '*': case '(': case ')': case '`': case '+': case '[': case ']': case '{': case '}': /*case '\\':*/ case '|': case '/':			case ',': case '?': case '–': case '—': case '\'': case '"': case '“': case '”': case '‘': case '’': case '…': case 'π':
		case '∫': case '∂': case 'ƒ': case '©': case '˙': case '∆': case '˚': case 'µ': case '®': case 'ß': case '†': case '√': case '∑': case '≈': case '¥': case 'Ω': case '¡': case '™': case '£': case '¢': case '∞': case '§': case '¶': case '•': case 'ª': case 'º': case '≠':
		case '⁄': case '€': case '‹': case '›': case 'fl': case '‡': case '°': case '·': case '‚': case '±': case '¯': case '˘': case '¿':
		case 'ı': case '': case '´': case '˝': case 'ˆ': case '': case '˜': case '‰': case 'ˇ': case '¨': case '◊': case '„': case '˛': case '¸':
			//			case 'α': case 'β': case 'γ': case 'δ': case 'ε': case 'ζ': case 'η': case 'θ': case 'ι': case 'κ': case 'λ': case 'μ': case 'ν': case 'ξ': case 'ο': case 'π': case 'ρ': case 'ς': case 'σ': case 'τ': case 'υ': case 'φ': case 'χ': case 'ψ': case 'ω': case 'ϑ': case 'ϒ': case 'ϖ':
			//			case 'Α': case 'Β': case 'Γ': case 'Δ': case 'Ε': case 'Ζ': case 'Η': case 'Θ': case 'Ι': case 'Κ': case 'Λ': case 'Μ': case 'Ν': case 'Ξ': case 'Ο': case 'Π': case 'Ρ': case 'Σ': case 'Σ': case 'Τ': case 'Υ': case 'Φ': case 'Χ': case 'Ψ': case 'Ω': case 'Θ': case 'ϒ':
			if ( !e.metaKey && !e.ctrlKey && !e.altKey ) { alphaNav(e); }
			break;
		case 'd': // Cmd/Ctrl + D: Toggle Details
			if ( cmdKey(e) && !$body.hasClass('has_warning') ) { e.preventDefault(); $('#show_details').click(); } else { alphaNav(e); }
			break;
		case 'e': // Cmd/Ctrl + E: Toggle Main Menu or Text Editor
			switch(true) {
				case $body.hasClass('has_warning'): break;
				case cmdShiftKey(e): // toggle text editor
					e.preventDefault();
					if ( window.self !== window.top ) { sendMessage('top','toggle_text_editor'); } else { $('#text_editor_row').find('a').click(); }
					$('body').addClass('faded');
					break;
				case cmdKey(e): // toggle main menu
					e.preventDefault();
					if ( window.self !== window.top ) { sendMessage('top','toggle_menu'); } else { $('#menu_container').click(); }
					break;
				default:	alphaNav(e);
			}
			break;
		case 'g': // Cmd/Ctrl + G: Show image Grid
			if ( cmdKey(e) && ( $('#top').hasClass('has_images') || $('#top').hasClass('has_fonts') ) ) { e.preventDefault(); $('#grid_btn').click(); } else { alphaNav(e); }
			break;
		case 'i': // Cmd/Ctrl + I: Toggle Invisibles
			switch(true) {
				case cmdKey(e):
					e.preventDefault();
					if ( window.self !== window.top ) { sendMessage('top','toggle_invisibles'); } else { $('#show_invisibles_container').find('input').click(); }
					break;
				default:	alphaNav(e);
			}
			break;
		case 'o': // Cmd/Ctrl + Shift + O: Open selected item in new window
			if ( cmdShiftKey(e) ) { window.open( $('#tbody').find('.selected').find('a').attr('href') ); } else { alphaNav(e); }
			break;
		case 'r': // Cmd/Ctrl + Shift + R: Refresh
			switch(true) {
				case cmdKey(e) && window.top !== window.self:	e.preventDefault(); sendMessage('top','reload'); break; // send reload message to top
				case cmdKey(e):		e.preventDefault(); $('#reload_btn').click(); break; // click reload/reset button
				default:			alphaNav(e);
			}
			break;
		case 'w': // Cmd/Crtl + W: if content pane has content, click close button; otherwise default behavior (close tab/window); Firefox does not allow scripts to override this behavior
			switch(true) {
				case cmdKey(e):
					switch(true) {
						case window.top !== window.self:
							e.preventDefault();
							sendMessage('top','close'); // send close message to top
							break;
						case $content_pane.hasClass('has_audio'):
						case $body.hasClass('has_playlist'):
						case $body.hasClass('has_filelist'):
						case $body.hasClass('iframe_edited'): // close edited iframe file
						case $content_pane.attr('data-content') !== undefined:
							e.preventDefault();
							$('#close_btn').click(); // click close button
							break;
						default: return true; // else close window (or normal behavior)
						}
					break;
				default:	alphaNav(e);
			}
			break;
		case '=': // equals sign
			switch(true) {
				case cmdKey(e) && /has_grid|has_image|has_font|has_glyph|has_font_file/.test($content_pane.attr('data-content')): e.preventDefault(); $('#increase').click(); break;
				case cmdKey: return; // allow normal Cmd + behavior
				default:	alphaNav(e);
			}
			break;
		case '-': // hyphen
			switch(true) {
				case cmdKey(e) && /has_grid|has_image|has_font|has_glyph|has_font_file/.test($content_pane.attr('data-content')): e.preventDefault(); $('#decrease').click(); break;
				case cmdKey: return; // allow normal Cmd - behavior
				default:	alphaNav(e);
			}
			break;
		case '\\': // \ backslash
			switch(true) {
				case cmdShiftKey(e): // Cmd Shift + \ : toggle split
					switch(true) {
						case window.top === window.self && $content_pane.attr('data-content') === 'has_iframe': sendMessage('iframe','split_view'); break; // send toggle split message to top
						case $('#split_view').height() > 0: $('#split_view').click(); break; // if split view visible...click toggle split
					}
					break;
				case cmdKey(e): // Cmd + \ : toggle sidebar
					if ( window.top !== window.self ) { sendMessage('top','hide_sidebar'); } else { $('#hide_sidebar').click(); }
					break;
			}
			break;
		case 'Tab':
			e.preventDefault();
			switch(true) {
				case $('body').hasClass('has_warning'):
					tabWarningButtons(e);		 					break; // focus warning buttons
				case document.activeElement.id === 'content_image':
					focusSidebar(); 								break; // focus sidebar from image
				case $content_pane.attr('data-content') === 'has_text_editor':
					focusTextEditorPanes(); 						break; // focus text editor
				case (/has_markdown|has_text|has_code|has_htm/.test($content_pane.attr('data-content')) && window.top === window.self ):
					$('body').addClass('focus_content');			sendMessage('iframe','focus_iframe');	break; // focus iframe text editor or htm files from top
				case ( /text_preview|html_preview|text_source/.test(document.activeElement.id) ):
					toggleTextEditorPanes();						break; // toggle focused text editor panes
				case $(document.activeElement).closest('#text_preview').length === 1:
					focusFocusableEls(e,'#text_preview');			break; // focus focusable elements in text preview
				case $(document.activeElement).closest('#font_specimen').length === 1:
					focusFocusableEls(e,'#font_specimen');			break; // focus focusable elements in font specimen
				case document.activeElement.hasAttribute('contenteditable'):
				case window.top !== window.self: // If iframe is focused, focus sidebar, dim selected iframe dir list item
					e.preventDefault();
					switch(true) {
						case $('#iframe_dir_list_wrapper').length === 1:
						case !/a|button|input|select|textarea/.test(document.activeElement.tagName.toLowerCase() ): // allow form elements to be focused
							$('#iframe_body,#dir_list tr.selected').addClass('is_blurred'); // dim iframe dir_list
							sendMessage('top','tab'); // focus sidebar
							break;
						case $('a,button,input,select,textarea').length > 0: // allow tabbing to form elements and textareas (e.g., in previewed html pages)
							if ( $('body').hasClass('has_text_editor_UI') ) { focusFocusableEls(e,'#text_container'); } else { focusFocusableEls(e); }
							break;
					}
					break;
				case window.top === window.self: // Either focus sidebar or refocus content pane (after clicking menu, for example)
					switch(true) {
						case $('body').hasClass('focus_content') && $('body').hasClass('has_menu'): case !$('body').hasClass('focus_content'):	focusContent('',e);		break;
						case $('body').hasClass('focus_content'): case $('body').hasClass('has_menu'): focusSidebar();		break;
					}
					break;
			}
			break;
		case 'Escape': // remove text selections, close warnings or help, close menus (and refocus content), or focus sidebar.
			if ( $content_pane.attr('data-loaded') !== 'loaded' ) { $content_pane.removeAttr('data-loaded'); $content_iframe.removeAttr('src'); $('#font_styles').empty(); } // close loading iframe
			if ( window.top !== window.self ) { $('#iframe_body').addClass('is_blurred'); sendMessage('top','escape'); } else { focusSidebar(); }
			window.getSelection().removeAllRanges();
			$('#content_playlist, #content_audio_playlist').removeClass('has_content');
    		$('#warning_btn_cancel,#close_help').click();
			break;
		case '.':
			switch(true) {
				case cmdKey(e):
					if ( $('body').hasClass('has_warning') ) {
						e.preventDefault();
						$('#warning_btn_cancel,#close_help').click(); // click cancel buttons
					}
					break;
			}
		} // end switch
	});
	// ***** END KEYBOARD EVENTS ***** //

	// ***** GRID SETUP ***** //
	// Create Font Grid Items
	function fontGridItems() {
		let $font_grid_items_arr = [], $font_files = $dir_list_body.find('.font'), new_grid_item;
		$('#font_grid_styles').empty();
		for ( let i = $font_files.length; i--; ) {
			new_grid_item = setContentFontSource( $font_files.eq(i).attr('id'), true, 'font_grid' );
			$font_grid_items_arr.unshift( new_grid_item );
		}
		$font_grid_items_arr[$font_grid_items_arr.length - 1].addClass('border_bottom_x'); // add bottom border to last
		return $font_grid_items_arr;
	}
	// Create Image Grid Items
	function imageGridItems() {
		let $image_grid_items_arr = [], $image_files = $dir_list_body.find('.image:not(.ignored)'), classes = 'image_grid_item border_right_x border_bottom_x', image_files_length = $image_files.length;
		for ( let i = image_files_length; i--; ) {
			const id = $image_files.eq(i).attr('id');
			const this_link = $image_files.eq(i).find('a').attr('href');
			const exts = $item_kind.image.filter( ext => $.inArray(ext, $row_settings.ignored) == -1 ); // decide which image files can be displayed
			const title_name = this_link.slice(this_link.lastIndexOf('/') + 1);
			if ( $.inArray( $image_files.eq(i).attr('data-ext'), exts ) > -1 ) { // if this row file ext is in the image extension array
				let item = `<div class="${ classes } background_color_EE_22" data-ID="${ id }" data-index="${ i }"><a href="${ this_link }"><img src="${ this_link }" title="${ title_name }" loading="lazy" /></a></div>`;
				$image_grid_items_arr.unshift( item );
			}
		}
		return $image_grid_items_arr;
	}
	// Make Grids
	function makeGrids(id) {
		closeGrid(); // remove previous grid items
		$content_pane.removeClass('has_hidden_grid has_image_grid has_font_grid'); // reset content_pane grid classes
		switch(true) {
			case id === 'show_font_grid' || !$body.hasClass('has_images'): $content_pane.addClass('has_font_grid');		$content_grid.append( fontGridItems() ); break; // only show font grid
			case id === 'show_image_grid' || !$body.hasClass('has_fonts'): $content_pane.addClass('has_image_grid');	$content_grid.append( imageGridItems() ); break; // only show image grid
			default: $content_grid.append( imageGridItems(), fontGridItems() ); // show grid of both images and fonts
		}
	}
	// Click grid button: make grid and show grid
	$('#sidebar_header').on('click', '#grid_btn, #show_font_grid, #show_image_grid', function(e) { e.stopPropagation(); showContent($(this).attr('id')); });

	// ***** SCALE PREVIEWED IMAGES & FONTS ***** //
	// Scale Fonts
	function scaleFonts(e, incr, id) {
		const font_size = parseInt(getComputedStyle(document.body).fontSize); // pts/em
		const getFontSize = function(el) { return parseFloat(el.css('font-size')); };
		if ( id === 'decrease' ) { incr = 1/incr; }
		if ( $content_pane.attr('data-content') === 'has_grid' ) { $content_grid.css({'font-size':( getFontSize($content_grid)/font_size * incr ) +'em'}); return; }
		if ( $content_pane.attr('data-content') === 'has_font' ) { $content_font.css({'font-size':( getFontSize($content_font)/font_size * incr ) +'em'}); return; }
		scrollThis('content_container','content_font');
	}
	// Scale Glyphs
	function scaleGlyphs(e, incr, id) {
		if ( id === 'decrease' ) { incr = 1/incr; }
		let scale = ( $('#glyph_viewer').attr('data-scale') === undefined ? incr : incr * $('#glyph_viewer').attr('data-scale') );
		if ( scale >= 1 ) {
			$('#glyph_viewer').css({'width': scale * 100 +'%','height': scale * 100 +'%'});
			document.getElementById('content_font').scrollLeft = -( Math.round( $('#font_viewer').outerWidth(true) - $('#glyph_viewer').width() ) / 2 );
			document.getElementById('content_font').scrollTop = -( Math.round( $('#font_viewer').outerHeight(true) - $('#glyph_viewer').height() ) / 2 );
		}
		$('#glyph_viewer').css({'background-size': scale * 100 +'%'}).attr('data-scale',scale.toFixed(2));
	}
	// Scale Image Grid items
	function scaleGridImages(incr,id) {
		if ( id === 'decrease' ) { incr = 1/incr; }
		const $image_grid_item = $('.image_grid_item img');
		let image_grid_item_width = 		Number.parseFloat( $image_grid_item.width(),10) * incr;
		let image_grid_item_height =		Number.parseFloat( $image_grid_item.height(),10) * incr;
		let image_grid_item_max_width =		Number.parseFloat( $image_grid_item.css('maxWidth'),10) * incr;
		let image_grid_item_max_height =	Number.parseFloat( $image_grid_item.css('maxHeight'),10) * incr;
		// prevent reducing grid image size on first scale click:
		if ( image_grid_item_width < image_grid_item_max_width ) { image_grid_item_width = image_grid_item_max_width; }
		if ( image_grid_item_height < image_grid_item_max_height ) { image_grid_item_height = image_grid_item_max_height; }
		// set grid properties
		$content_grid.css({'grid-template-columns':'repeat(auto-fill, minmax('+ (image_grid_item_width +16) +'px, auto ) )'});
		$content_grid.find('img').css({'max-width':( image_grid_item_width ) +'px', 'max-height':( image_grid_item_height ) +'px'});
		return;
	}
	// Zoom Images on click
	function scaleImages(e,incr,id) {
		const $content_container = ( $('#iframe_body > img').length === 1 ? $('#iframe_body') : $('#content_container') );
		const $this_image = ( $('#iframe_body > img').length === 1 ? $('#iframe_body > img') : $content_image );
		const this_link = $this_image.attr('src');
		  let CC_width = function() { return Math.round($content_container.width()); };
		  let CC_height = function() { return Math.round($content_container.height()); };
		const this_width = Math.round($this_image.width());
		const this_height = Math.round($this_image.height());
		const iframe_delta =  ( $('#iframe_body > img').length === 1 ? Number.parseInt($('#iframe_body').css('padding')) : 0 );
		// scale grid images
		if ( $content_pane.attr('data-content') === 'has_grid' ) {
			scaleGridImages(incr,id);
		} else { // scale single images
			getImageDimensions( this_link, function( width, height ) {
				switch(true) {
					case incr !== undefined && id !== undefined: // scale images by increment
						$content_pane.addClass('has_scaled_image').removeClass('has_zoom_image'); // remove zoom classes in case window resized after zoom
						if ( id === 'increase' ) {// && this_width < width && this_height < height) {
							$this_image.css({'width':this_width * incr, 'height': this_height * incr});
							$this_image.css({'width':this_width * incr, 'height': 'auto', 'max-width':'none', 'max-height':'none' });
						}
						if ( id === 'decrease' && ( this_width >= 1 && this_height >= 1 ) ) {
							$this_image.css({'width':this_width / incr, 'height': 'auto', 'max-width':'none', 'max-height':'none' });
						}
						// keep images centered when scaling
						if ( Math.round($this_image.width()) >= CC_width() ) {
							$content_image_container.scrollLeft( ( Math.round( ( $this_image.outerWidth(true) ) - CC_width() ) )/2 ) ;
						}
						if ( Math.round($this_image.height()) <= CC_height() ) {
							$content_image_container.scrollTop( ( CC_height() - Math.round( $this_image.height() ) )/2 );
						} else {
							$content_image_container.scrollTop( ( Math.round($this_image.outerHeight(true)) - CC_height())/2 ) ;
						}
						break;
					default: { // else zoom single image on click
						$this_image.removeAttr('style');
						if ( width <= CC_width() && height <= CC_height() ) { // but don't zoom small images:
							$content_pane.removeClass('has_zoom_image has_scaled_image');
							return;
						} // otherwise, zoom image:
						const $CC_offset = $content_container.offset();
						const $img_offset = $this_image.offset();
						// x,y coordinates of zoom click as percentage of image width/height
						const percentX = (e.pageX - $img_offset.left)/this_width;
						const percentY = (e.pageY - $img_offset.top)/this_height;
						// calculate scroll by pixel coordinates of full-size image - click coordinates and content_container offsets
						const scrollX = (width * percentX) - e.pageX + $CC_offset.left - (iframe_delta * width / this_width);
						const scrollY = (height * percentY) - e.pageY + $CC_offset.top - (iframe_delta * height / this_height);

						$content_pane.removeClass('has_scaled_image').toggleClass('has_zoom_image' );
						$content_image_container.scrollLeft( scrollX );
						$content_image_container.scrollTop( scrollY );
					}
				}
			});
			setImageDimensions();
		}
	}
	// Zoom single image on click
	$content_image_container.on('click','img', function(e) { scaleImages(e); focusContent('content_image_container'); });
	// Scale Fonts and Images
	function scalePreviewItems(e,id) { // combine scaling into one function
		if ( $content_pane.attr('data-content') === 'has_glyph' ) { scaleGlyphs(e, 1.125, id); return; }
		scaleImages(e, 1.125, id );
		scaleFonts(e, 1.125, id );
	}
	// Scale Buttons
	$('#scale').on('click','span', function(e) {
		e.preventDefault(); e.stopPropagation();
		scalePreviewItems(e, $(this).attr('id') );
		$('#reload_btn').addClass('reset');
		if ( $('body').hasClass('focus_content') ) { focusContent(); }
	});
	// ***** END SCALE PREVIEW ITEMS ***** //

	// ***** AUDIO CONTENT ***** //
	// Update Playlist
	function updateTrackList() {
		let playlist = [];
		$dir_list_body.find('.media').not('.unchecked').not('.disabled').not('.audio_loaded').not('.content_loaded').not('.selected').each(function() { playlist.push( $(this).attr('id') ); });
		return playlist;
	}
	// Randomize Shuffle List
	function shuffleArray(array) {
		for ( let i = array.length - 1; i > 0; i-- ) { const j = Math.floor(Math.random() * (i + 1));  [array[i], array[j]] = [array[j], array[i]]; }
		return array;
	}
	// Attach Shuffle List data to $audio_player
	function updateShuffleList(id) {
		let shuffle_list;
		switch(true) {
			case !$body.hasClass('shuffle_media'):
				break;
			case id !== undefined: // don't include .playing and .unchecked track in shufflelist
				shuffle_list = $audio_player.data('shufflelist');
				switch(true) {
					case $(document.getElementById(id)).hasClass('unchecked') || ( /audio_loaded|content_loaded/.test(document.getElementById(id).classList.value) ):
						shuffle_list.splice(shuffle_list.indexOf(id), 1); $audio_player.data('shufflelist',shuffle_list); break;
					default:
						shuffle_list.push(id); shuffle_list = shuffleArray( shuffle_list );
				}
				break;
			default:
				shuffle_list = shuffleArray( updateTrackList() );
				$audio_player.data('shufflelist',shuffle_list);
		}
	}
	// Click media checkboxes
	$('#tbody').on('click','tr.media input', function(e) {
		if (getBrowser() === 'is_gecko') { e.preventDefault(); } // because Firefox sucks
		e.stopPropagation(); toggleChecked(this);
	});
	// Toggle single media checkboxes and update shufflelist
	function toggleChecked(el) { el.blur(); $(el).closest('tr').toggleClass('unchecked'); updateShuffleList($(el).closest('tr').attr('id')); }
	// toggle all media checkboxes and update shufflelist
	function toggleAllChecked() { $dir_list_body.find('> tr').find('input').trigger('click'); updateShuffleList(); }
	$('#play_toggle').on('click',function(e) { e.preventDefault(); e.stopPropagation(); toggleAllChecked(); });
	// Is Playing; returns true if all conditions are true
	function isPlaying(id) {
		switch(true) {
			case window.top !== window.self:
				return ( $('body').hasClass('is_playing') ? true : false );
			default: return ( id !== undefined && document.getElementById(id).currentTime > 0 && !document.getElementById(id).paused && !document.getElementById(id).ended );
		}
	}
	// Play Media
	function playMedia(task) {
		if ( $content_pane.hasClass('has_audio') ) { $audio_player.trigger(task); } else { $content_video.trigger(task); }
		setPlayerStatus(task);
	}
	function setPlayerStatus(task) {
		if ( task === 'play' ) { $('body').removeClass('is_paused').addClass('is_playing'); } else { $('body').removeClass('is_playing').addClass('is_paused'); }
		if ( $content_pane.hasClass('has_iframe_audio') ) { sendMessage('iframe','setIframePlayerStatus','',task); }
	}
	// Skip media tracks +/-10/30 seconds
	function mediaSkip(e,args) {
		let factor, skip;
		switch(true) {
			case e !== undefined: 		factor = ( e.key === 'ArrowLeft' ? -1 : 1 ); 	skip = ( e.altKey && e.shiftKey ? 30 : e.altKey ? 10 : null ); break; // from top
			case args !== undefined:	factor = ( args[0] === 'ArrowLeft' ? -1 : 1 );	skip = args[1]; break; // from iframe
		}
		const $player = ( $('#content_pane').hasClass('has_audio') ? $audio_player : $content_video ); // audio or video?
		const time = $player.prop('currentTime'); // current time
		$player.prop('currentTime', time + factor*(skip)); // set time
	}
	// Play/Pause Audio/Video
	function playPauseMedia() {
		let playerID = ( $content_pane.attr('data-content') === 'has_video' ? 'content_video' : 'audio' );
		let player = document.getElementById( playerID );
		switch(true) {
			case isPlaying( playerID ): player.pause(); $('body').removeClass('is_playing').addClass('is_paused'); break;
			default: 					player.play();  $('body').removeClass('is_paused').addClass('is_playing');
		}
	}
	// Toggle Audio Playback Options (shuffle, loop)
	function audioPlaybackOptions(id) {
		switch(true) {
			case id === 'shuffle': case id === 'shuffle_media_files': $body.toggleClass('shuffle_media'); updateShuffleList(); break;
			case id === 'loop': case id === 'loop_media_files': $body.toggleClass('loop_media'); break;
		}
		switch(true) { // change audio checkboxes prop
			case id === 'shuffle_media_files': ( $('#shuffle').prop('checked') === true ? $('#shuffle').prop({'checked':false}) : $('#shuffle').prop({'checked':true}) ); break;
			case id === 'loop_media_files': ( $('#loop').prop('checked') === true ? $('#loop').prop({'checked':false}) : $('#loop').prop({'checked':true}) ); break;
		}
	}
	// click loop or shuffle audio options
	$('#media_files_menu').on('click','#loop_media_files,#shuffle_media_files', function() { audioPlaybackOptions( $(this).attr('id') ); closeMenus(); });
	$('#audio_options').on('click','input', function() { audioPlaybackOptions( $(this).attr('id') ); $(this).blur(); document.getElementById('top').focus(); });
	// Initialize Media: play next track on ended and scroll to playing item
	function initMedia() {
		$('#audio,#content_video').on('ended', function() {
			switch(true) {
				// play track from iframe
				case $content_pane.hasClass('has_iframe_audio'):			sendMessage('iframe','play_prev_next_iframe_audio','','ArrowRight'); 	break;
				case $content_pane.hasClass('has_audio'): 					playPrevNextMediaTrack('ArrowRight','true');  break;
				case $content_pane.attr('data-content') === 'has_video':	playPrevNextMediaTrack('ArrowRight','true');  break;
			}
			scrollThis('tbody','.audio_loaded');
			scrollThis('tbody','.video.content_loaded');
		});
	}
	// ***** END AUDIO PLAYBACK ***** //
	// ***** IFRAME SETUP ***** //
	function setUpIframeUI() { // set up iframe directory UI or iframe text editor
		let iframe_location = decodeURIComponentSafe(window.location.href), content = '';
		$('body').attr('id','iframe_body'); // add iframe body id
		$('video').css({'width':'100%'});
		const text_files = $item_kind.markdown.concat($item_kind.text, $item_kind.code); // define which files are editable
		const link_files = $item_kind.link;
		switch(true) {
			case window.location.pathname.indexOf('/?') > 0: // set up iframe directory
			case window.location.pathname.endsWith('/'): // set up iframe directory
				setUpIframeDirUI(iframe_location);
				break;
			case text_files.includes( window.location.pathname.slice( window.location.pathname.lastIndexOf('.') + 1 ) ): // else set up iframe text editor
				setUpTextEditorUI();
				if ( iframe_location.endsWith('.cue') ) { content = $('#text_source').val(); } // get cue sheet text for processing
				if ( link_files.includes( iframe_location.slice(iframe_location.lastIndexOf('.') + 1 ) ) ) { content = $('#iframe_body').find('> pre').html(); } // get link file content for processing
				break;
			default:
				break; // all other iframe content (e.g., html files)
		}
		let args = [iframe_location,content]; // args[0] = link, args[1] = iframe_content
		sendMessage('top','iframe_loaded','',args);
	}
	// IFRAME DIRECTORY Prep
	function setUpIframeDirUI(link) { // set up iframe dir_list UI
		let parent_link = link.split('/').slice(0,-2).join('/') +'/';//+ window.location.search;
		let query_str = new URLSearchParams(window.location.search.toString().slice(1));
		let $iframe_body = $('#iframe_body'), $iframe_head = $('head'), $iframe_utility_iframe = '<iframe id="content_iframe_utility" sandbox="allow-scripts allow-same-origin allow-modals allow-popups" style="display:none;"></iframe>';
		let body_classes = []; // make array of classes to add all at once
		if ( getBrowser() === 'is_gecko' ) { body_classes.push('is_gecko'); } // append gecko styles and fix links
		switch(true) {
			case query_str.get('view_directory_source') === 'true':
			case query_str.get('is_error') === 'true':
				break; // show raw directory index if error or viewing directory source
			default: // else set up iframe directory
				for ( let key of query_str.keys() ) {
					switch(true) {
						case query_str.get(key) === 'true':		body_classes.push(key);		break; 						// add body classes for boolean params
						case query_str.get(key) !== 'false':	body_classes.push(key+'_'+getSearchParam(key));	break;	// non-boolean params (theme, sort, sort_direction)
					}
				}
				$iframe_head.find('style').remove(); 	// remove any existing directory index styles
				$iframe_head.append('<style id="iframe_dir_styles">'+ $iframe_dir_styles +'</style><style id="color_and_background_styles">'+ $color_and_background_styles +'</style>');
				$iframe_head.append('<style id="gecko_style_rules">'+ $gecko_style_rules +'</style>'); // no break;
				// if opening a subdirectory, use dir_list_subdir to contain prepped index (i.e., we don't need the sidebar or other UI elements.
				  let dir_list_subdir = '<table id="dir_list"><tbody id="tbody" class="border_bottom text_color_111"></tbody></table>'; // dir_list_subdir
				  let iframe_table = ( query_str.get('subdirectory') === 'true' ? dir_list_subdir : ContentIframeDirEls(parent_link) ); // get iframe directory UI for regular iframe or subdirectory

				const make_new_index = makeNewIndex($iframe_body, query_str.get('sort_by'))[0]; // make new index
				const prepped_index = make_new_index[0]; 										// define prepped index
				const additional_classes = make_new_index[1]; 									// additional body classes

				$iframe_body.removeAttr('style').addClass(additional_classes).addClass(body_classes.join(' ')).empty().append(iframe_table).find('#tbody').append(prepped_index); // add UI & prepped_index
				if ( query_str.get('subdirectory') === null ) { $iframe_body.append($iframe_utility_iframe); } // append utility iframe only in top iframe; i.e., don't nest utility iframes
				if ( query_str.get('subdirectory') === 'true' ) { // subdirectories
					sendMessage('top','dir_list_subdir_loaded','',$('#tbody').html() ); // if content_iframe_utility, send #top prepped directory for subdirectories
				}
		}
	}
	// IFRAME Click
	$('#iframe_body, #iframe_body #toolbar, #iframe_body #toolbar li, #iframe_body #tbody, #iframe_body .has_icon_before_before').on('click', function() {
		$('body').removeClass('is_blurred'); sendMessage('top','iframe_click'); // tell top to close menus, focus content
	});
	// IFRAME Select iframe row on click or play/pause iframe audio
	function iframeSelectRow(row) {
		$('body').removeClass('is_blurred');
		row.addClass('selected').removeClass('is_blurred').siblings('tr').removeClass('is_blurred selected'); // set selected classes
		if ( row.hasClass('audio_loaded') ) { sendMessage('top','iframe_play_pause_media'); } // play/pause media
	}
	$('#iframe_body').on('click','#tbody tr', function(e) {
		e.preventDefault(); e.stopImmediatePropagation();
		iframeSelectRow($(this));
	});
	// IFRAME Click links from html files (should really combine with iframeDoubleClickRow())
	function iframeClickLink(e,link,id) {
		let url;
        if ( !link.startsWith('#') ) { e.preventDefault(); url = newURL(link); } // if link is not a link fragment
        let kind = getLinkInfo(url.href)[3];
		switch(true) {
			case url === undefined: case link.startsWith('#'): 															break; // allow default link fragment behavior
			case id === 'tbody': 		e.preventDefault();	window.location = link + '?&view_directory_source=true';	break; //
			case id === 'parent': 		sendMessage('top','show_iframe_dir','',[link,'dir']); 							break; // open parent directory in iframe; add data-iframe_link to $content_iframe
			case url.protocol === 'file:' && window.location.protocol !== 'file:':	sendMessage('top','local_link');	break; // show warning when attempting to open local links from non-local pages
			case url.protocol !== 'file:' && window.location.protocol === 'file:':	window.open(link,'_blank');			break; // open remote link from local page in new tab/window
			case url.protocol === 'file:' && window.location.protocol === 'file:':										// no break; open local links on local files in iframe
			case url.protocol === 'about:':										 										// no break; document #link fragments
			case RegExp(url.hostname).test(window.location.hostname): 													// no break; same origin links (might not include TLD) (just covering bases here)
			case RegExp(window.location.hostname).test(url.hostname): 													// no break; same origin links (might not include TLD) (just covering bases here)
				if ( /dir|app/.test(kind) ) { sendMessage('top','show_iframe_dir','',[link,kind] ); } else { sendMessage('top','show_iframe_file','',[link,kind] ); }	break;
			default: window.open(link,'_blank'); 																		break; // else open external document links in new tab
		}
	}
	// click link in html files (i.e., not iframe dir index)
	$('#iframe_body').on('click','a', function(e) {
		if ( $(this).closest('table').attr('id') !== 'dir_list' ) { iframeClickLink(e,$(this).attr('href'),$(this).closest('span,tbody').attr('id')); }
	});
	// IFRAME Doubleclick iframe dir_list items (files and dirs)
	function iframeDoubleClickRow(row) {
		let kind = row.closest('tr').attr('data-kind'); // get item kind
		if ( kind === 'audio' ) { row.closest('tr').addClass('audio_loaded selected').siblings('.audio').removeClass('audio_loaded selected'); }
		let link = row.attr('href'); // get item link
		switch(true) {
			case ( /dir|app/.test(kind) ):	sendMessage('top','show_iframe_dir','',[link,kind]); break; // dirs: tell top what to open; ignore ignored files when dblclicked
			default: 						sendMessage('top','show_iframe_file','',[link,kind]); // files: tell top what to open; ignore ignored files when dblclicked
		}
	}
	$('#iframe_body').on('dblclick','#tbody tr:not(.ignored) a', function(e) { e.preventDefault(); e.stopPropagation(); iframeDoubleClickRow($(this)); });
	// Open IFRAME directory in sidebar
	function openDirInSidebar() { let link = window.location.href; sendMessage('top','open_iframe_dir_in_sidebar','',link); }
	$('#open_in_sidebar').on('click',function(e) { e.preventDefault(); openDirInSidebar(); });
	// parent directory link for source directory view
	$('#iframe_body').on('click','#parentDirText,#UI_goUp a.up', function(e) {
		e.preventDefault(); e.stopPropagation();
		if ( window.location.search.indexOf('view_directory_source') > -1 ) { window.location = $(this).closest('a').attr('href') + '?&view_directory_source=true'; }
	});
	//***** TEXT EDITING PANE *****//
	function setUpTextEditorUI() {
		let source_text, body_classes = [], content;
		if ( !$('body').hasClass('has_text_editor_UI') ) { // add classes, styles, and scripts; only add once
			$('head').append('<style id="text_editor_styles">'+ $text_editor_styles +'</style>');
			$('head').append('<link id="github_markdown_css" rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/github-markdown-css/3.0.1/github-markdown.min.css"></link>');
			$('#title span').empty();
			body_classes.push('has_text_editor_UI');
		}
		switch(true) { // get source text and append UI elements
			case window.self === window.top: // top level text editor
				if ( !$('body').hasClass('has_text_editor_UI') ) { $('#content_text').append( text_editing_UI_els ); } // only add the text editor UI if it hasn't been added already
				break;
			case window.self !== window.top: // iframe text editing UI
				$('head').prepend('<meta charset="utf-8" /><meta http-equiv="Content-Type" content="text/plain; charset="utf-8">')
						 .append('<style id="warning_styles">'+ $warning_styles +'</style>'); // add iframe text editing styles
				source_text = decodeURIComponentSafe($('body').find('> pre').text()); // get source text and decode Unicode chars.
				$('body').empty().append('<div id="content_text" class="background_color_DD_33">'+ text_editing_UI_els +' </div><div id="warnings_container" class="">'+ warnings +'</div>'); // add the UI
				$('#text_source').val(source_text); // set the source text value
				// no break
			case $('#text_source').val().trim().startsWith('#EXTM3U'): // playlists and filelists
				content = $('#text_source').val().trim(); // get m3u.txt file for processing
				sendMessage('top','iframe_playlist','',content);
				break;
		}
		switch(true) { // assemble text editing body classes
			case getSearchParam('enable_text_editing') === 'false': // text editing disabled
				$('body').removeClass('split_view preview_text preview_html');
				body_classes.push('text_editing_disabled source_text'); // show the source text
				$('#text_source').prop('disabled','disabled'); // diable textarea editing
				break;
			default:
				if ( getSearchParam('split_view') === 'true' ) 					{ body_classes.push('split_view'); }
				if ( getSearchParam('sync_scroll') === 'true' )					{ body_classes.push('sync_scroll'); $('#sync_scroll input').click(); }//$('#sync_scroll input').prop({'checked':true}); }
				if ( getSearchParam('default_text_view') === 'preview_source' ) { body_classes.push('source_text'); }
				if ( getSearchParam('default_text_view') === 'preview_text' ) 	{ body_classes.push('preview_text'); }
				if ( getSearchParam('default_text_view') === 'preview_html' ) 	{ body_classes.push('preview_html'); }
				if ( getSearchParam('editor_theme') === 'default' )
					{ body_classes.push('editor_theme_'+ getSearchParam('theme')); } else { body_classes.push( 'editor_theme_'+ getSearchParam('editor_theme') ); }
		}
		$('body').addClass( body_classes.join(' ') ); // add text editor body classes
		focusTextEditorPanes();
		TextEditing(); // call text editing functions
	}
	// setup and show top level text editor
	$('#text_editor, #text_editor_row').on('click', function(e) { e.preventDefault(); showContent( $(this).attr('id') ); });

	// Main Text Editing Function
	function TextEditing() {
		let $toolbar = $('#toolbar'), $source = $('#text_source'), $preview = $('#text_preview'), $html = $('#html_preview'), $MDhandle = $('#text_editing_handle');
		// Toolbar button functions
		$toolbar.on('mousedown', function(e) 	{ e.preventDefault(); }); // prevent textarea from losing focus when clicking sidebar
		// Resize
		$MDhandle.on('mousedown', function(e)	{ e.stopPropagation(); MDresizeSplit($MDhandle,$source); });
		$(window).on('resize', function()		{ $source.add($preview).add($MDhandle).attr('style',''); }); // reset split to 50/50 on window resize;
		// Click labels to toggle checkboxes
		$preview.add($toolbar).on('click','label', function(e) { e.stopPropagation(); $(this).siblings('input').click(); });
		// Sync scroll
		$source.on('scroll', function()		{ MDsyncScroll(this); });
		$preview.on('scroll', function()	{ MDsyncScroll(this); });
		$html.on('scroll', function()		{ MDsyncScroll(this); });
		// Generate Markdown Preview
		let source_text = ( $source.length === 0 ? '' : $source.val() );
		MDmarkdown( source_text, $preview );
		// Live preview update, and set edited classes for unsaved warning
		$source.on('input', function() { // only add class or send message once after editing
			if ( !$('body').hasClass('edited') ) {
				$('body').addClass('edited'); // add edited class
				if ( window.top !== window.self ) { sendMessage('top','iframe_edited','',''); } // send edited message to top
			}
			MDlivePreview($source,$preview);
		});
		// Checklists
		MDsetChecklistClass();
		$preview.on('click','.checklist input', function(e) 	{ e.stopPropagation(); MDliveCheckBoxes($(this),$source,$preview); }); // Live checkboxes
		$preview.on('click','.table-of-contents a', function(e) { e.preventDefault();  MDtocClick($(this),$preview); }); // Preview TOC click navigation
		$preview.on('click','.uplink', function(e) 				{ e.stopPropagation(); MDheaderClick($preview); }); // Click header uplinks
	}
	///// END MAIN MD FUNCTION

	// MARKDOWN Functions
	// Focus Text
	function focusTextEditorPanes() {
		switch(true) {
			case $('body').hasClass('split_view'): case $('body').hasClass('source_text'): $('#text_source').focus(); break;
			case $('body').hasClass('preview_html'): $('#html_preview').focus(); break;
			case $('body').hasClass('preview_text'): $('#text_preview').focus(); break;
		}
	}
	// toggle text editor panes (on tab)
	function toggleTextEditorPanes() {
		switch(true) {
			case document.activeElement.id === 'text_preview' && getFocusableEls('#text_preview').length > 0: // focus focusable elements in text preview
				getFocusableEls('#text_preview').first().focus(); break;
			case ( /text_preview|html_preview|text_source]/.test(document.activeElement.id) && !$('body').hasClass('split_view') ): // text editor: if not split view, focus sidebar
				sendMessage('top','focus_sidebar'); break;
			case $('body').hasClass('split_view'):
				switch(true) {
					case document.activeElement.id === 'text_source': // text editor: if text source has focus with split, focus the other pane
						if ( $('body').hasClass('preview_html') ) { $('#html_preview').focus(); } else { $('#text_preview').focus(); } break;
					case ( /text_preview|html_preview/.test(document.activeElement.id) ): // text editor: if text preview has focus with split, focus text source
						$('#text_source').focus(); break;
				}
				break;
		}
	}
	// Select Textarea Content
	function selectTextareaContent(id) {
		let $textarea = document.getElementById(id);
		$textarea.focus();
		$textarea.select();
		$textarea.scrollTop = 0;
	}

	function saveBtn(id) {
		let data, ext, file_name;
		switch(true) {
			case $('#content_pane').attr('data-content') === 'has_text_editor': file_name = 'untitled'; break;
			default:	file_name = decodeURIComponentSafe(window.location.pathname.split('/').reverse()[0]);
						file_name = file_name.slice(0,file_name.lastIndexOf('.'));
		}
		switch(true) {
			case		id === 'save_text': data = $('#text_source').val(); ext = '.md'; break;
			case		id === 'save_HTML':	data = MDprepHTML($('#text_preview').html()); ext = '.html';
		}
		saveMD( data, file_name + ext );
	}
	$('#content_text').on('click','#save_btn li',function() { saveBtn($(this).attr('id')); }); // save text editor content
	// MD SAVE SOURCE or HTML
	function MDprepHTML(data) {
		const save_HTML_open = `<!DOCTYPE html><html><head><meta charset="utf-8" /><title></title>
								<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/github-markdown-css/3.0.1/github-markdown.min.css"></link>
								<style></style><script></script></head><body lang="en" class="markdown-body">`;
		const save_HTML_close = '</body></html>';
		data = data.replace(/<span\sclass="uplink">.<\/span>/g,'');
		return save_HTML_open + data + save_HTML_close;
	}
	function saveMD(data,file_name) { // #top must save text, otherwise a new window is opened that contains the blob content
		if ( window.top !== window.self ) { sendMessage('top','save_text','',[data,file_name]); } else { saveFile(data,'text/plain',file_name); }
		$('body,#text_source,#content_text').removeClass('edited');
	}
	// MD Custom pre- and post-processing for text.
	function MDaddHeaderIDs(match, p1, p2, p3) { return '<h'+ p1 +' id="'+ p3.toLowerCase().replace(/\s/g,'-') +'" ' + p2 +'>'+ p3; } // create header ids for TOC
	function MDcustomPreProcess(src) { return src; } // we're not doing anything here just yet...
	function MDcustomPostProcess(html) {
		html = html.replace(/<(p|li|dt|dd)>-*\s*\[\s*x\s*\]\s*(.+?)<\/(p|li|dt|dd)>$/gm,'<$1 class="checklist"><input type="checkbox" checked><label>$2</label></$3>') // checkboxes in p,li,dt,dd
			.replace(/<(p|li|dt|dd)>-*\s*\[\s{1,}\]\s*(.+?)<\/(p|li|dt|dd)>$/gm,'<$1 class="checklist"><input type="checkbox"><label>$2</label></$3>') // checkboxes
		//				.replace(/<li><p class="checklist">"/g,'<li class="checklist"><p>')
			.replace(/^<h(\d)([^>]*)>([^<]+)/gm, MDaddHeaderIDs) // add header IDs;
			.replace(/<\/h(\d)>/g,'<span class="uplink">&uarr;</span></h$1>');
		return html;
	}
	//MD Render markdown from preprocessed source text
	function MDmarkdown(source_text,$preview_el) {
		const MDit = window.markdownit({linkify:false, typography:false, html:true}).use(window.markdownitMultimdTable, {enableMultilineRows: true})
			.use(window.markdownitSub).use(window.markdownitSup).use(window.markdownitFootnote).use(window.markdownitCentertext).use(window.markdownitDeflist).use(window.markdownitTocDoneRight);
		let MDpreview = MDit.render( MDcustomPreProcess( source_text ) );
			$preview_el.html( MDcustomPostProcess( MDpreview ) ); // set previewed text
		let source_HTML = $preview_el.html().toString();
			$('#html_preview').empty().text(source_HTML); // set raw html
	}
	// MD Live preview, add edited warning
	function MDlivePreview($source_el,$preview_el) { MDmarkdown( $source_el.val(),$preview_el ); MDsetChecklistClass(); }
	// MD Live Checkboxes prep: find each instance of [ ] or [x] and replace text in index = to clicked checkbox in Preview.
	function MDreplaceAt(str, replacement, position) { str = str.substring(0, position) + replacement + str.substring(position + replacement.length); return str; }
	function MDreplaceNthSubStr(str,substr,replacement,index) {
		let count = 0, found = substr.exec(str);
		while ( found !== null ) { if ( count === index ) { return MDreplaceAt(str, replacement, found.index ); } else { count++; found = substr.exec(str); } }
	}
	// MD Live Checkboxes
	function MDliveCheckBoxes(checkbox,$source_el,$preview_el) {
		$('.checklist').removeClass('clicked');
		checkbox.closest('p,li,dt,dd').addClass('clicked');
		const this_index = $preview_el.find('.checklist').index( $('.clicked') );
		const src_text = $source_el.val();
		const substr = new RegExp(/\[\s*.\s*\]/g);
		const replacement = ( checkbox.is(':checked') ? '[x]' : '[ ]' );
		$source_el.val( MDreplaceNthSubStr(src_text, substr, replacement, this_index) );
	}
	// MD Checkbox list class: Prevent checkbox lists from having list bullets
	function MDsetChecklistClass() { $('input[type="checkbox"]').closest('ul').css({'list-style':'none','padding':'0'}); }
	// MD Resize Split View
	function MDresizeSplit(handle,$source_el) {
		let sidebar_width = $('#sidebar').outerWidth();
		let page_width = window.innerWidth;

		$(document).on('mousemove',function(e) {
			e.stopPropagation(); e.preventDefault();
			let pageX = e.pageX;
			if ( pageX > sidebar_width + 100 && pageX < page_width - 100 ) { // min widths
				$('#text_source').css({'width': pageX - sidebar_width + 'px'});
				$('#html_preview').css({'width': $('#content_text').outerWidth() - $source_el.outerWidth() + 'px'});
				$('#text_preview').css({'width': $('#content_text').outerWidth() - $source_el.outerWidth() + 'px'});
				handle.css({'left': $source_el.outerWidth() - 4 + 'px'});
			}
		});
		handle.on('mouseup', function() { $(document).off('mousemove'); focusTextEditorPanes(); });
	}
	// MD UI Sync Scroll
	function MDpercentage(el) { return (el.scrollTop / (el.scrollHeight - el.offsetHeight)); }
	function MDsyncScroll(el1) {
		let el2; // scroll this element when scrolling el1
		switch(true) {
			case el1.getAttribute('id') === 'text_source': el2 = ( $('body').hasClass('preview_html') ? document.getElementById('html_preview') : document.getElementById('text_preview') ); break;
			case ( /text_preview|html_preview/.test(el1.getAttribute('id') ) ):	el2 = document.getElementById('text_source'); break;
		}
		if ( document.querySelector('input[name="sync_scroll"').checked ) { el2.scrollTo( 0, (MDpercentage(el1) * (el2.scrollHeight - el2.offsetHeight)).toFixed(0) ); } // toFixed(0) prevents scrolling feedback loop
	}
	// click TOC anchors
	function MDtocClick(el,$preview_el) { let thisId = el.attr('href'); if ( thisId ) { $preview_el.scrollTop( $(thisId).offset().top - 48 ); } }
	// click Headers to return to TOC or top
	function MDheaderClick($preview_el) {
		switch(true) {
			case $preview_el.find('.table-of-contents').length > 0: document.getElementsByClassName('table-of-contents')[0].scrollIntoView(true); break;
			default: document.getElementById('preview').scroll(0,0);
		}
	}
	// Toggle Editor Theme
	$('body').on('click','#editor_theme',function() { $('body').toggleClass('editor_theme_light editor_theme_dark').removeClass('editor_theme_default'); });
	// MD Clear text source
	function clearText() {
		if ( window.self !== window.top ) { sendMessage('top','iframe_edited'); }
		$('body').removeClass('edited');
		$('#text_preview,#html_preview').empty();
		$('#text_source').val('').show().focus();
	}
	$('#clear_text').on('click',function() { showWarning('clearText'); });
	// Sync Scroll
	function syncScroll() { $('body').toggleClass('sync_scroll'); toggleSearchParam('sync_scroll'); }
	$('body').on('click','#sync_scroll input',function(e) { syncScroll(); });
	$('body').on('click','#sync_scroll label',function(e) { $('#sync_scroll input').click(); });
	// END TEXT EDITING

	//***********************//
	// MESSAGES
	// Send a message to iframe or parent
	function sendMessage(target,message,funcName,args) {
		let messageObj = { 'messageContent': message, 'functionName': funcName, 'arguments': args }, content_iframe;
		if ( target === 'iframe' )	{ content_iframe = document.getElementById('content_iframe'); content_iframe.contentWindow.postMessage( messageObj, '*' ); }
		if ( target === 'top' )		{ window.parent.postMessage( messageObj, '*'); }
	}
	// Receive a message from iframe or parent, do appropriate action
	function receiveMessage(e) {
		if ( e.origin === 'null' || e.origin === $origin ) {
			let message = e.data.messageContent, funcName = e.data.functionName, args = e.data.arguments;
			switch( message ) {
				case 'arrowNavigation':		arrowNavigation(args); 			break; // class_name, key
				case 'hide_sidebar': 		$('#hide_sidebar').click();	break;
				case 'toggle_menu':		 	$('#menu_container').click();	break;
				case 'close_menu':			// no break
				case 'top_closed_menu': 	$('#iframe_body').removeClass('has_menu is_blurred');	break;
				case 'top_has_menu':		$('#iframe_body').addClass('has_menu is_blurred');		break; // tell iframe top has menu
				case 'menu_navigation': 	menuNavigation(args);			break; // menu navigation from iframe
				case 'menu_selection':		// no break
				case 'clickMenu': 			e.preventDefault(); e.stopPropagation(); clickMenu();	break; // show menu
				case 'toggle_invisibles':	$('#show_invisibles_container').find('input').click();	focusContent();	break;
				case 'focus_sidebar':		focusSidebar(); // no break
				case 'escape':				// no break
				case 'tab': // close menus and refocus content or focus sidebar
					switch(true) { case $('#top').hasClass('focus_content') && $('#top').hasClass('has_menu'):	focusContent(); break;
									default: focusSidebar(); }	scrollThis('tbody','selected');	break;
				case 'shift_focus_iframe':
					switch(true) {
						case $('#iframe_dir_list_wrapper').length === 1: // if iframe dir_list visible...
							$('body').removeClass('is_blurred');
							switch(true) {
								case $('tr.selected, tr.is_blurred').length > 0:	$('tr.is_blurred').removeClass('is_blurred').addClass('selected');	break;
								default:	$('#tbody').find('tr:visible').last().addClass('selected'); // select last row when tabbing into directory
							}
							break;
						default: getFocusableEls('#iframe_body').last().focus();	break;
					}
					break;
				case 'focus_iframe': // after tabbing into iframe
					$('body').removeClass('has_menu is_blurred');
					switch(true) {
						case $('#iframe_dir_list_wrapper').length === 1: // if iframe dir_list visible...
							switch(true) {
								case $('tr.selected, tr.is_blurred').length > 0:	$('tr.is_blurred').removeClass('is_blurred').addClass('selected');	break;
								default:	$('#tbody').find('tr:visible').first().addClass('selected'); // select first row when tabbing into directory
							}
							break;
						case $('body').hasClass('has_text_editor_UI'): // if text editor visible...
							switch(true) { case document.activeElement.id === 'iframe_body': focusTextEditorPanes(); break; }
							switch(true) { // ... and restore text selection: NOT IMPLEMENTED YET -- but should only be used for text editor, not editable file?
								case $('body').hasClass('split_view'):
								case $('body').hasClass('source_text'): {
										let selection = window.getSelection();
										if ( selection.anchorOffset > 0 ) { // restore cursor position or text selection
											// document.getElementById('text_source').setSelectionRange(x,y);
											// document.getElementById('text_source').scrollTop = [position of x];
											// return;
										} else { document.getElementById('text_source').setSelectionRange(0,0); document.getElementById('text_source').scrollTop = 0; }
										break;
									}
								}
							break;
						case document.activeElement.id === 'iframe_body': // focus form elements and textareas in iframe files
							getFocusableEls('#iframe_body').first().focus();
					}
					break;
				case 'blur_iframe':					$('body').addClass('is_blurred');					break;
				case 'iframe_click':				closeMenus(); $('body').addClass('focus_content');	break; // close menus and fade sidebar
				case 'show_iframe_dir':				showContent('content_iframe_dir',args);				break; // args[0] === item link, args[1] === item kind
				case 'show_iframe_file':			showContent('content_iframe_file',args);			break; // args[0] === item link, args[1] === item kind
				case 'show_content': // mainly for opening webloc and url files from
					if ( args[1] === 'dir' ) { showContent('content_iframe_dir',args); } else { showContent('content_iframe_file',args); }
					break;
				case 'open_iframe_dir_in_sidebar':	window.location = args;								break; // tell top to open iframe directory in sidebar; args === iframe directory url
				case 'open_iframe_parent_dir':		$('#iframe_body #parent').find('a').click();		break;
				case 'iframe_arrow_navigation':
					switch(args) {
						case 'ArrowUp': 	$('#tbody').find('tr:visible').last().find('a').click(); 	break;
						case 'ArrowDown':	$('#tbody').find('tr:visible').first().find('a').click(); 	break;
					}
					break;
				case 'reload':						$('#reload_btn').click();	break; // reload content
				case 'close':						$('#close_btn').click();	break; // escape content_iframe and close content
				// toggle iframe dir_list UI prefs from main menu:
				case 'show_numbers': case 'show_invisibles': case 'alternate_background': case 'hide_ignored_items': case 'ignore_ignored_items':	$('#iframe_body').toggleClass(message);	break;
				// AUDIO MESSAGES
				case 'iframe_play_pause_media':		playPauseMedia();			break; // tell top to play/pause audio from iframe click
				case 'mediaSkip':					mediaSkip(undefined,args);	break; // tell top to mediaskip from focused iframe
				case 'play_prev_next_iframe_audio': // play next iframe track
							playPrevNextMediaTrack(args);
					break;
				case 'close_iframe_audio':		$('.audio_loaded').removeClass('audio_loaded');		break;
				case 'set_media_duration':		setMediaDuration(args[0],args[1]); 					break; // set media durations for subdirectories
				// TEXT EDITING MESSAGES
				case 'iframe_edited':			if ( !$('body#top').hasClass('iframe_edited') ) { $('body#top').addClass('iframe_edited'); }	break; // let top know iframe text has been edited
				case 'clear':					$('body#top').addClass('iframe_edited');		break; // add edited class after clearing text from edited iframe file
				case 'save_text_selection':		$('.text.selected,.code.selected,.markdown.selected').attr('data-selection_start',args[0]).attr('data-selection_end',args[1]);	break; // from iframe
				case 'get_text_selection': 		$('#content_text').attr('data-selection_start',args[0]).attr('data-selection_end',args[1]);	break;
				case 'save_text':				saveFile(args[0],'text/plain',args[1]);			break;
				// MESSAGES FROM TOP to IFRAME
				case 'theme_light': case 'theme_dark':		$('#iframe_body').toggleClass('theme_dark theme_light');		break; // change iframe dir theme
				case 'editor_theme_default': case 'editor_theme_light': case 'editor_theme_dark':
					$('#iframe_body').removeClass('editor_theme_default editor_theme_light editor_theme_dark').addClass(message); // text editor theme
					break;
				case 'split_view': case 'toggle_split_view':		$('#toggle_split_view').click();		break; // change iframe text editor split
				case 'default_text_view':		$('#iframe_body').toggleClass('preview_text source_text').removeClass('split_view');	break; // change iframe text editor text view
				case 'toggle_text_editor':		showTextEditor();			break;
				case 'unloading': // warn iframe that user wants to change or close iframe
					if ( !$('#iframe_body').hasClass('has_warning') ) {
						$('#iframe_body').addClass('has_warning').find('#warnings_container').removeClass().addClass('unloading').attr('data-function_name',funcName).attr('data-args',args); }
					break;
				case 'dont_save':// from iframe "Don't Save" button
					$body.removeClass('iframe_edited');	$('tr.selected:not(.audio),tr.content_loaded').removeClass('selected content_loaded');	closeContent(); focusSidebar();	break;
				case 'open_link_file':		openLink(args);				break; // open webloc and url files
				case 'iframe_loaded':
					switch(true) {
						case args[1] !== '' && !$('tr.selected').hasClass('cue'): processCueSheet(args[1]); break; // cue sheet
						default: showIframeContent(args); // if message received by top, iframe loaded successfully; otherwise, data-loaded remains 'unloaded'
					}
					break;
				case 'dir_list_subdir_loaded':	$('.dir_list_subdir_loading').toggleClass('dir_list_subdir_loading has_subdirectory').after(args); updateStats(); break; // subdirectory loaded
				case 'iframe_playlist': 		$('tr.text').removeData('playlist').removeClass('playlist').filter('.selected').data('playlist',args).addClass('playlist'); break;
				case 'local_link': 				openWarning('warning_local_file','warning_btn_ok'); break;
				case 'setIframePlayerStatus': // for iframe audio playback
					if ( args === 'play' ) { $('body').removeClass('is_paused').addClass('is_playing'); } else { $('body').removeClass('is_playing').addClass('is_paused'); } break;
			}
		}
	}
	window.addEventListener('message',receiveMessage,false);
	// END MESSAGES

	// WARNINGS
	// list of functions to remember while sending messages and then execute after warning button click
	function doFunction(funcName,args) {
		var funcDictionary = { 'arrowNavigation':arrowNavigation, 'clickRow':clickRow, 'doubleClickRow':doubleClickRow, 'null':null, 'clickMenu':clickMenu, 'clickThis':clickThis, 'clearText':clearText,
			'closeButton':closeButton, 'closeContent':closeContent, 'closeFontFile':closeFontFile, 'closePlaylist':closePlaylist, 'closeGlyph':closeGlyph, 'mediaSkip':mediaSkip,
			'openSidebarInContentPane':openSidebarInContentPane, 'resetContent':resetContent, 'setLocation':setLocation, 'showDirectorySource':showDirectorySource };
		return funcName === 'null' ? null : funcDictionary[funcName](args);
	}
	// Open and Close Warning alert, focus default button
	function openWarning(id,buttonid)	{ $('body').addClass('has_warning').find('#warnings_container').removeClass().addClass(id); focusButton(buttonid); }
	function closeWarning() 			{ $('body').removeClass('has_warning').find('#warnings_container, #warning_buttons button').removeClass(); }
	// Show warning after in certain conditions (edited text, open playlist, open font file, etc.; otherwise do the action.
	function showWarning(funcName,args) {
		switch(true) {
			case ( /arrowNavigation|clickRow/.test(funcName) ): // warnings for arrow navigation and row clicks
				switch(true) {
					// upon receipt of message, iframe will show its warning message, based on the funcName
					case $('body').hasClass('iframe_edited'):	sendMessage('iframe','unloading',funcName,args.key);	focusButton('warning_btn_save');	break;
					// warn with open font file and focused sidebar
					case !$('body').hasClass('focus_content') && /has_font_file|has_glyph/.test( $content_pane.attr('data-content') ):	openWarning('warning_close_font','warning_btn_cancel'); break;
					default: doFunction(funcName,args);	break;
				}
				break;
			case ( !/arrowNavigation|clickRow/.test(funcName) ): // warnings for other functions
				switch(true) {
					case $content_pane.attr('data-content') === 'has_font_file':	openWarning('warning_close_font','warning_btn_cancel');	break; // warn with open font file and close button.
					case $('body').hasClass('has_playlist') && $content_pane.attr('data-content') === undefined && !$content_pane.hasClass('has_audio'):
					case $('body').hasClass('has_filelist') && $content_pane.attr('data-content') === undefined && !$content_pane.hasClass('has_audio'):
						openWarning('warning_close_playlist','warning_btn_cancel');	break;
					case $('body').hasClass('edited'): case funcName === 'clearText':
						$('#content_pane').removeClass('has_hidden_text_editor').attr('data-content','has_text_editor');	openWarning('unloading','warning_btn_save');	break;
					default: doFunction(funcName,args);	break;
				}
		}
	}
	// Warning buttons: what to do when the user clicks a warning button
	function warningButtons(id) {
		let btn = $(document.getElementById(id)), container_el = btn.closest('body');
		switch(id) {
			case 'warning_btn_dont_save': // do the user initiated func without saving the edited text
				switch(true) {
					case window.self !== window.top:
						if ( $('#warnings_container').hasClass('unloading') ) { clearText(container_el); sendMessage('top','dont_save'); } break;// remove the irame src and body.iframe_edited class ignore
					case window.self === window.top:
						clearText(container_el); $content_pane.removeAttr('data-content'); $('#content_iframe').removeAttr('src').removeClass('has_content'); $dir_list.find('.dir.selected a').click();
				}
				closeWarning();
				break;
			case 'warning_btn_cancel':	closeWarning();	if ( $body.hasClass('focus_content') ) { focusContent(); }	break;
			case 'warning_btn_clear':	closeWarning();	clearText();	break; // clear text editor
			case 'warning_btn_save':	if ( window.top !== window.self ) { sendMessage('top','clear'); }	container_el.removeClass('edited');	$('#save_text_link').click();	closeWarning();	break;
			case 'warning_btn_ok':
				switch(true) {
					case $('#warnings_container').hasClass('warning_close_font'): 		closeFontFile();	closeWarning();	break;
					case $('#warnings_container').hasClass('warning_close_playlist'):	closePlaylist();	closeWarning();	break;
					case $('#warnings_container').hasClass('warning_make_playlist'):	makePlaylist();	break;
					case $('#warnings_container').hasClass('warning_local_bookmark'):	// no break
					case $('#warnings_container').hasClass('warning_local_file'):		// no break
					case $('#warnings_container').hasClass('warning_local_playlist'):	// no break
					case $('#warnings_container').hasClass('warning_no_playlist'):		closeWarning();	break;
				}
				break;
		}
	}
	// Click Edited Warning Buttons
	$('#warnings_container').on('click','button', function(e) { e.preventDefault(); e.stopPropagation(); warningButtons( $(this).attr('id') ); });
	// Edited Warning overlay: prevent user clicks on rest of UI
	$('body.has_overlay, body.has_warning').on('click mousedown mouseup', function(e) { e.preventDefault(); e.stopPropagation(); return; });
	// Tab Warning Buttons (keyboard event)
	function tabWarningButtons(e) {
		switch(true) {
			case e.shiftKey:
				switch(true) {
					case !$('#warning_buttons').find(':focus,.focus').length || !$('#warning_buttons').find(':focus,.focus').prevAll('button:visible').length:
						$('#warning_buttons').find('button:visible').removeClass('focus').last().focus().addClass('focus');		break;
					default: $('#warning_buttons').find(':focus,.focus').removeClass('focus').prevAll('button:visible').first().addClass('focus').focus();
				}
				break;
			default:
				switch(true) {
					case !$('#warning_buttons').find(':focus,.focus').length || !$('#warning_buttons').find(':focus,.focus').nextAll('button:visible').length:
						$('#warning_buttons').find('button:visible').removeClass('focus').first().focus().addClass('focus'); 	break;
					default: $('#warning_buttons').find(':focus,.focus').removeClass('focus').nextAll('button:visible').first().addClass('focus').focus();
				}
		}
	}
	// END WARNINGS

	// PLAYLISTS
	// Open playlist
	$('#menu').on('click','#open_playlist_label', function(e) { e.stopPropagation(); });
	$('#menu').on('change','#open_playlist', function(e) { openFile(e,'playlist'); });
	// Open Playlist/Filelist
	function openPlaylist(files,reader,data) { // files and reader = open .m3u file; data = contents of m3u.txt file
		if ( !$body.hasClass('has_playlist') && !$body.hasClass('has_filelist') ) { // store original dir_list and body "has_" classes as data if body does not already have playlist or filelist
			let body_classes = document.getElementById('top').classList, data_classes = [];
			for ( let bodyClass of body_classes.values() ) { if ( bodyClass.startsWith('has') ) { data_classes.push( bodyClass ); } } // add original body classes to dataclasses
			$('#tbody').data('dir_list', $('#tbody').html() ).data('data_classes',data_classes); // store the original dir_list and classes
			$body.removeClass(data_classes.join(' ')); 				// remove the original body classes
		}
			$body.removeClass('has_playlist has_filelist');
			closeMenus();
		let file_name = ( files !== '' ? files.name : $('tr.selected.playlist').find('.tbody_row_cell_name_a_span').text() ); // get the file name for the title and current_dir_path
		let playlist_items = ( reader.result || data ); 			// get the playlist items from the file
		let new_index = buildNewIndex( '', convertPlaylist(playlist_items) );
			closeContent(); 										// if normal .m3u file, close all existing content; otherwise, leave m3u.txt files open; but what about filelists?
		$('#tbody').empty().append(new_index[0]); 					// append the prepared playlist
		if ( new_index[1].split(' ').filter(function(e) { return e !== 'has_media' && e !== 'has_audio' && e !== 'has_video' && e !==''; }).length > 0 || $('#tbody').find('tr.dir').length > 0 ) {
			$body.addClass('has_filelist'); 						// if playlist contains non-media files or dirs
		} else {
			$body.addClass('has_playlist has_media'); 				// else normal media playlist
		}
		// if ( !$('#sort_by_name').hasClass('selected' ) ) { $('#sort_by_name').click(); } // sort by name
		updateStats();
		if ( /file:/.test(new_index) && !/file:/.test($protocol) ) { // show warning about local files on non-local page
			$body.addClass('has_warning');
			$('tbody').addClass('local');
			openWarning('warning_local_playlist','warning_btn_ok');
		}
		if ( $body.hasClass('autoload_media') ) { autoLoadFile(); } // autoload media
		scrollThis('tbody','selected',false);
		document.title = 'Playlist: '+ file_name;
		$('#current_dir_path').find('span').empty().html( file_name );
		$('#open_playlist').val(''); // clear form to allow new list to be loaded
 	}
	// Make and save playlist
	function makePlaylist() {
		let items = $('#tbody'), rows, playlist = [], playlistEntry = '';
		let playlist_type = $('#make_playlist_form').find('input:checked').attr('id');
		switch(playlist_type) {
			case 'media_files_only':	rows = items.children('tr.media:not(.unchecked)');	break;
			case 'audio_files_only':	rows = items.children('tr.audio:not(.unchecked)');	break;
			case 'video_files_only':	rows = items.children('tr.video:not(.unchecked)');	break;
			case 'all_non_media_files':	rows = items.children('tr:not(.media)');			break;
			case 'all_items':			rows = items.children('tr'); 						break;
			case 'directories_only':	rows = items.children('tr.dir');					break;
			case 'files_only':			rows = items.children('tr.file');					break;
		}
		switch(true) { // show warning if no qualifying items found or make playlist
			case rows.length === 0:
				openWarning('warning_no_playlist','warning_btn_ok');
				break;
			default:
				for ( let i = 0; i < rows.length; i++ ) {
					let row = $(rows[i]);
					let link = getLinkInfo( row.find('a').attr('href') )[0].trim();
					let timing = '';
					playlistEntry = '#EXTINF:'+ timing +','+ row.find('a').text() +'\n'+ link;
					playlist.push(playlistEntry);
				}
				playlist = '#EXTM3U\n'+ playlist.join('\n'); // add playlist header id
				saveFile(playlist,'audio/mpeg-url','untitled.m3u'); // show save file dialogue
				closeWarning();
		}
	}
	// Select "Make Playlist" menu item: show make playlist warning list
	$('#make_playlist').on('click',function(e) { e.preventDefault(); e.stopPropagation(); closeMenus(); openWarning('warning_make_playlist','warning_btn_ok'); });
	// Get playlist entry
	function makePlaylistEntry(id) {
		let title, link, duration = '';
		switch(true) {
			case id === 'title': // make link for non-audio items
 				title = $('#title span').text();
 				switch(true) {
 					case $content_pane.attr('data-content') === 'has_image': // link for images
 						link = $('#content_image').attr('src');
 						break;
 					default: // all other content
 						link = $('.content.has_content').attr('src');
	 					if ($('.content.has_content').attr('id') === 'content_video') { duration = Number.parseInt(getElById('video')[0].duration); }
 						break;
 				}
				link = getLinkInfo(link)[0].trim();
				$('#content_playlist').find('textarea').val('#EXTINF:'+ duration +','+ title +'\n'+ link +'\n').focus();
				break;
			case id === 'content_audio_title':
 				title = $('#content_audio_title span').text();
				link = getLinkInfo($('#audio').attr('src'))[0].trim();
				duration = Number.parseInt(getElById('audio')[0].duration); // get the track duration in secs from the media element
				$('#content_audio_playlist').find('textarea').val('#EXTINF:'+ duration +','+ title +'\n'+ link +'\n').focus(); // add the entry to the textarea
				break;
		}
	}
	// Show Playlist Entry
	function showPlaylistEntry(id) {
		makePlaylistEntry(id);
		switch(true) {
			case id === 'title':
				document.getElementById('content_playlist').classList.toggle('has_content');
				selectTextareaContent('content_playlist_textarea');
				break;
			case id === 'content_audio_title':
				document.getElementById('content_audio_playlist').classList.toggle('has_content');
				selectTextareaContent('content_audio_playlist_textarea');
				break;
		}
	}
	$('#title, #content_audio_title').on('click',function() {
		if ( $content_pane.attr('data-content') !== 'has_font_file' && $content_pane.attr('data-content') !== 'has_grid' ) { showPlaylistEntry($(this).attr('id')); }
	});
	// Open File
	function openFile(e,type) { // type: font or playlist.
		if (window.File && window.FileReader && window.FileList && window.Blob) {
			let files = e.target.files[0];
			let reader = new FileReader();
			if ( type === 'font' ) { reader.readAsArrayBuffer(files); }
			if ( type === 'playlist' ) { reader.readAsText(files); }
			reader.onload = function() {
				if ( type === 'font' ) { openFontFile(files,reader); }
				if ( type === 'playlist' ) { openPlaylist(files,reader); }
				return true;
			};
		} else {
			alert('Can\'t open file: file APIs are not fully supported in this browser.');
		}
	}
	// Save File
	function saveFile(content,mimetype,file_name) {
		let blob = new Blob([content], {type: mimetype});
		let $download_el = window.document.createElement('a');
		    $download_el.style = "display:none";
			$download_el.href = window.URL.createObjectURL(blob);
			$download_el.download = file_name;
			document.body.appendChild($download_el);
			$download_el.click();
		document.body.removeChild($download_el);
		URL.revokeObjectURL(blob);
	}
})();
// FINIS! † DEO GRATIAS † //