Aced out GameServers.com Config editor

GameServers.js

// ==UserScript==
// @name         Aced out GameServers.com Config editor
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  This script adds the ace editor to the config editor on gameservers.com
// @author       digitalfiz <https://twitter.com/digitalfiz>
// @match        https://my.gameservers.com/home/subscription_info.php?view=server_configuration&*
// @grant        none
// ==/UserScript==


function buildEditor(syntax) {
  var textarea = $('textarea[name="advanced_editor_content"]');

  // create div with the editors contents
  $(textarea).before('<div id="editor">' + $(textarea).text() + '</div>');
  // make it purdy
  $("#editor").css('width', '100%');
  $("#editor").css('height', '400px');
  $("#editor").css('margin-top', '10px');

  // Setup editor on new div
  var editor = ace.edit('editor');
  editor.setTheme('ace/theme/tomorrow_night');

  // Add syntax highlighting
  editor.getSession().setMode('ace/mode/' + syntax);

  // Loop changes back to the textarea
  editor.getSession().on('change', function () {
    textarea.val(editor.getSession().getValue());
  });

  // Now lets hide the textarea
  $(textarea).hide();
}

(function () {
  'use strict';

  var sel = $('select[name="GMCONFIGID"] option:selected').text();
  var syntax = 'plain_text';
  if (sel.indexOf('.ini') >= 0) {
      syntax = 'ini';
  } else if (sel.indexOf('Server Command Line') >= 0) {
      syntax = 'sh';
  }

  // Load up ace!
  $.getScript('https://cdnjs.cloudflare.com/ajax/libs/ace/1.2.3/ace.js').done(function( script, textStatus ) {
    // remote script has loaded
    console.log('loaded ace');
    buildEditor(syntax);
  });

})();