rnd.today=new Date(); 
rnd.seed=rnd.today.getTime(); 
function rnd() { 
	rnd.seed = (rnd.seed*9301+49297) % 233280; 
	return rnd.seed/(233280.0); 
}; 
var home_img="";
function rand(number) { 
return Math.ceil(rnd()*number); 
}
	var num=rand(3);
	home_img="images/top/top_"+ num +".jpg";
function loadat(){
	//document.all.home_img.setAttribute('InnerHTML',home_img);
	window.randimg.background=home_img;
}