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SplitScreen

split the screen of the page

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         SplitScreen
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  split the screen of the page
// @author       daydreamorama
// @match        http://*/*
// @include     *://archiveofourown.org/*works/*
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// ==/UserScript==

// I stole this from a 2011 script that didn't work anymore.
if (window.top == window) {
    /* Get current location */
    var loc = window.location + "";

    /*
         * The contents won't be loaded if the location of the iframe is exactly
         * the same as the main document (that's probably to protect against
         * infinite nesting of iframes), so we need to modify it slightly.
         */
    if (loc.match(/\?/))
        loc = loc.replace(/\?/, '?%20=&');
    else
        loc = loc + '?';


    document.documentElement.innerHTML =  '<head></head>' +
        '<body><iframe id="f1"></iframe><iframe id="f2"></iframe>' +
        '<div id="ov">&nbsp;</div></body>';

    var body = document.querySelector('body'),  /* Document body */
        f1 = document.querySelector('#f1'),     /* First iframe */
        f2 = document.querySelector('#f2'),     /* Second iframe */
        ov = document.querySelector('#ov');     /* Overlay */

    f1.src = f2.src = loc;

    body.style.margin="0"
    body.style.padding="0"
    body.style.height="100%"
    body.style.width="100%"
    body.style.background="#bbb"
    body.style.overflow="hidden"

    f1.style.width="50%"
    f1.style.height="100%"
    f1.style.border=f2.style.border="none"
    f1.style.left="0%"
    f1.style.position="absolute"


    f2.style.width="50%"
    f2.style.height="100%"
    f2.style.left="50%"
    f2.style.position="absolute"
   // f2.style.borderRight="solid 1px #ddd"

    ov.style.height="100%"
    ov.style.width="100%"
    ov.style.position="absolute"
    ov.style.zindex="999"
    ov.style.display="none"
}