var _st = window.setTimeout;

/*== Enhance  window.setTimeout ============================== */
 window.setTimeout = function(fRef, mDelay) 
 { 
		if(typeof fRef == "function")
		{  
			var argu = Array.prototype.slice.call(arguments,2); 
			var f = (function(){ fRef.apply(null, argu); }); 
			return _st(f, mDelay); 
		} 
		return _st(fRef,mDelay);
}



/*== Test codes below============================== */


function beforeAppend(button)
{ 
	var div = document.createElement("div");
	var date = new Date();
	var number = Math.ceil(Math.random()*1000);
	button.style.background="#898A84";
	setTimeout(afterAppend,1000,div,date,number,button);
}


function afterAppend(element,date,number,button)
{ 
	var endTime = new Date();
	element.innerHTML =  ( endTime - date) + " milliseconds<br /> Random Number =  " + number;
	document.getElementById("foo").appendChild(element);
	button.style.background="buttonface";
}