Control Freak script to replace the default ZenDesk tinyMCE loaded on a page with a more better / full featured one.

ZenDesk-ControlFreak-tinyMCE-improver.js

/*
 * advanced toolbar tinyMCE replacer for ZenDesk.
 */

// remove all existing editors from the page.
var editor_types = ['entry_body', 'post_body'];
for (var i=0; i < editor_types.length; i++) {
    if (tinyMCE.editors[editor_types[i]] !== undefined){
        tinyMCE.editors[editor_types[i]].remove();
    }
};

// boot up our new editor in it's place.
tinyMCE.init(
    {
        convert_urls : false, 
        mode : "exact", 
        elements : editor_types.join(','), 
        theme : "advanced",
        entities : "160,nbsp,34,quot,162,cent,8364,euro,163,pound,165,yen,169,copy,174,reg,8482,trade,8240,permil,60,lt,62,gt,8804,le,8805,ge,176,deg,8722,minus",
        button_tile_map : true, 
        plugins : "safari,zd_advimage,fullscreen,visualchars,table,paste,media", 
        theme_advanced_buttons1 : "undo,redo,removeformat,|,formatselect,|,bold,italic,underline,strikethrough,sub,sup,|,outdent,indent,bullist,numlist,hr|,link,unlink,charmap,image",
        theme_advanced_buttons2 : "cut,copy,paste,pastetext,pasteword,separator,tablecontrols,separator,cleanup,code,fullscreen,media",
        theme_advanced_buttons3 : "", 
        theme_advanced_toolbar_location : "top", 
        theme_advanced_toolbar_align : "left",
        theme_advanced_path_location : "bottom", 
        theme_advanced_blockformats : "p,h1,h2,h3,h4,blockquote,pre",
        paste_auto_cleanup_on_paste : false, 
        gecko_spellcheck : true, 
        extended_valid_elements : "s,a[name|href|target|title|onclick|class|rel],img[class|src|style|border=0|alt|title|hspace|vspace|width|height|align|onmouseover|onmouseout|name],hr[class|width|size|noshade],span[class|align|style],font[color|size],iframe[src|style|width|height],script[charset|defer|language|src|type],div[id|class|style],form[name|id|action|method|enctype|accept-charset|onsubmit|onreset|target|class|style],input[id|name|type|value|size|maxlength|checked|accept|src|width|height|disabled|readonly|tabindex|accesskey|onfocus|onblur|onchange|onselect|class|style|autocomplete],textarea[id|name|rows|cols|disabled|readonly|tabindex|accesskey|onfocus|onblur|onchange|onselect|class|style],option[name|id|value|class|style],select[id|name|type|value|size|maxlength|checked|accept|src|width|height|disabled|readonly|tabindex|accesskey|onfocus|onblur|onchange|onselect|length|options|selectedIndex|class|style],object[width|height|classid|codebase|style|type|data|title],param[name|value],embed[src|type|width|height|flashvars|wmode|allowscriptaccess|allowfullscreen]",
        
        theme_advanced_resizing : true, 
        theme_advanced_resize_horizontal : false, 
        body_class : "user_formatted entry content",
        setupcontent_callback : function (editor_id, body, doc) {
          body.style.background = 'white';

          if (typeof(doc.importNode) === 'function') {
            $$('style').each(function(style){
              doc.getElementsByTagName('head')[0].appendChild(doc.importNode(style, true));
            });
          }

          if (typeof(doc.addEventListener) === 'function') {
            doc.addEventListener('keydown', function(event){
              InputTracking.trackElement.call(body, event);
            }, false);
          }
        },
        content_css : "https://xobni.zendesk.com/stylesheets/zd_all_users.css?version=128"
    }
);