<!--

function popup(url) {
 sealWin=window.open(url,"popup",'toolbar=0,location=0,directories=0,status=0,menubar=0, scrollbars=yes,resizable=yes,width=820,height=600,top=0,left=0');
	sealWin.focus();
}



var iValue, rNumber;
var img1 = new Image();
var img2 = new Image();
var img3 = new Image();
var img4 = new Image();
img1 = "../chain_img/index_mainp01.jpg";
img2 = "../chain_img/index_mainp02.jpg";
img3 = "../chain_img/index_mainp03.jpg";	
img4 = "../chain_img/index_mainp04.jpg";	
function display_image(){
	iValue = Math.random() * 3;
	rNumber = Math.ceil(iValue);
	if(rNumber==0) rNumber++;
	document.image1.src=eval("img" + rNumber);
}

//-->