Adds Drive link to YouTube header menu
// ==UserScript==
// @name Add Drive to YouTube Header
// @namespace http://tampermonkey.net/
// @version 1.0
// @description Adds Drive link to YouTube header menu
// @author Your Name
// @match https://vanced-youtube.neocities.org/2011/
// @grant none
// ==/UserScript==
(function() {
'use strict';
// Create the new <li> element
var driveNode = document.createElement('li');
driveNode.className = 'gbt';
driveNode.innerHTML = '<a class="gbzt" id="gb_23" onclick="gbar.qs(this);gbar.logger.il(1,{t:23})" href="http://mail.google.com/mail/?hl=en&tab=wm"><span class="gbtb2"></span><span class="gbts">Drive</span></a>';
// Find the Gmail <li> element
var gmailNode = document.querySelector('li.gbt a.gbzt#gb_23[href="http://mail.google.com/mail/?hl=en&tab=wm"]');
// Insert the new node after the Gmail node
if (gmailNode) {
var parent = gmailNode.parentNode.parentNode;
parent.insertBefore(driveNode, parent.children[parent.children.length - 1].nextSibling);
}
})();