text: /*!
   * Ext Core Library 3.0
   * http://extjs.com/
   * Copyright(c) 2006-2009, Ext JS, LLC.
   * 
   * MIT Licensed - http://extjs.com/license/mit.txt
   */
  	
  	if(Ext.isIE) {
          function fnCleanUp() {
              var p = Function.prototype;
              delete p.createSequence;
              delete p.defer;
              delete p.createDelegate;
              delete p.createCallback;
              delete p.createInterceptor;
  
              window.detachEvent("onunload", fnCleanUp);
          }
          window.attachEvent("onunload", fnCleanUp);
      }
  })();