function Cart(){
	window.open("","Cart","location=yes,status=yes,toolbar=yes,menubar=no,scrollbars=yes,resizable=yes,width=650,height=525");
}

ranimg=new Array();
	ranimg[0]='img/top/banner_top_bakudan.jpg';
	ranimg[1]='img/top/banner_top_stealth.jpg';
	ranimg[2]='img/top/banner_top_pf.jpg';
	ranimg[3]='img/top/banner_top.jpg';
	function pre_img()
		{
		a=Math.floor(Math.random()*ranimg.length);
		document.images["imgname"].src=ranimg[a];
		}