function prepare(){
	if(sUrl=='') return false;
	window.parent.location.href = sUrl;
}
function addLoadEvent(func){
	var oldonload = window.onload;
	if (typeof window.onload != 'function'){
		window.onload = func;
	}else{
		window.onload = function(){
			oldonload();
			func();
		}
	}
}
addLoadEvent(prepare);