var _setTimeout=setTimeout;

window.setTimeout=function(callback,time,params){

   var param=Array.prototype.slice.call(arguments,2);

   var _callback=function(){

   	 callback.apply(null,param);

   }

   _setTimeout(_callback,time);

}

function test(param){

    alert(param);

}

function test2(a,b,c){

	alert(a+b+c);

}

var obj=new Object();

window.setTimeout(test,100,obj);

window.setTimeout(test2,100,obj,1,2);