Как сделать редактор с подсветкой кода в Битриксе

// Код загрузчика редактора c подсветкой кода.
function loadJS(src) {
   var script=document.createElement('script');
   script.setAttribute("type","text/javascript");
   script.setAttribute("src", src);
   document.getElementsByTagName("head")[0].appendChild(script);
}

function init() {
   // quit if this function has already been called
   if (arguments.callee.done) return;
   
   // flag this function so we don't do the same thing twice
   arguments.callee.done = true;
   
   // kill the timer
   if (_timer) {
      clearInterval(_timer);
      _timer = null;
   }

   if (typeof document.getElementsByName('filesrc')[0] != 'undefined') {
      var textedit = document.getElementsByName('filesrc')[0]
      textedit.setAttribute("id", "filesrc");
   
      // load Editarea
      loadJS("/bitrix/js/editarea/edit_area/edit_area_full.js");
      loadJS("/bitrix/js/editarea/init.js");
   }

};

/* for Mozilla */
if (document.addEventListener) {
   document.addEventListener("DOMContentLoaded", init, false);
}

/* for Internet Explorer */
/*@cc_on @*/
/*@if (@_win32)
   document.write("<script id=__ie_onload defer src=javascript:void(0)><\/script>");
   var script = document.getElementById("__ie_onload");
   script.onreadystatechange = function() {
      if (this.readyState == "complete") {
         init(); // call the onload handler
      }
   };
/*@end @*/

/* for Safari */
if (/WebKit/i.test(navigator.userAgent)) { // sniff
   var _timer = setInterval(function() {
      if (/loaded|complete/.test(document.readyState)) {
         init(); // call the onload handler
      }
   }, 10);
}

/* for other browsers */
window.onload = init;

editAreaLoader.init({
   id: "filesrc"   // id or name of the textarea to transform      
   ,start_highlight: true   // if start with highlight
   ,allow_resize: "both"
   ,allow_toggle: true
   ,word_wrap: true
   ,language: "en"
   ,syntax: "php"   
   ,font_family: "Menlo, \"DejaVu Sans Mono\", \"Courier New\", \"Lucida Console\", monospace"
   ,font_size: "8"
});