UserScript to fetch the embed link from a Dropbox share link, and embed in youtrack

dropbox2yt.user.js

// ==UserScript==
// @name       YouTrack Dropbox Embed
// @namespace  http://visit.com/
// @version    0.1
// @description  inserts an image from a dropbox url
// @match      https://youtrack.internal.visit.com/*
// @copyright  2012+, Jimmy
// ==/UserScript==

(function(){
document.addEventListener('keydown', function(e) {
  // pressed alt+g
  if (e.keyCode == 71 && e.shiftKey && !e.ctrlKey && e.altKey && !e.metaKey) {

        var url = prompt("Dropbox url?","");
        
        if (url != null)
          {
    GM_xmlhttpRequest({ // that would be "func1"
        "method" : "GET",
        "url" : url,    // first url in the list
        "onload" : function(xhr)
        {
            var oPage = xhr.responseText;   // page contents
            console.log(oPage);
			var link = /<a href="(https:\/\/dl.dropboxusercontent.*?)" id="download_button_link"/.exec(oPage)[1];
            var textarea = document.querySelector("textarea[name*=description]");
            textarea.innerHTML += "\n{html}<img src=\"" + link + "\" width=\"100%\" />{html}";
		}
    });

        }

  }
}, false);
})();