// JScript 文件
lastScrollYs = 0;
function heartBeat2(){
//alert('11');
var diffY;
if (document.documentElement && document.documentElement.scrollTop)
diffY = document.documentElement.scrollTop;
else if (document.body)
diffY = document.body.scrollTop
else
{/*Netscape stuff*/}
//alert(diffY);
percent=.1*(diffY-lastScrollYs);
if(percent>0)percent=Math.ceil(percent);
else percent=Math.floor(percent);

document.getElementById("leftDiv2").style.top = parseInt(document.getElementById("leftDiv2").style.top)+percent+"px";
document.getElementById("rightDiv2").style.top = parseInt(document.getElementById("rightDiv2").style.top)+percent+"px";

lastScrollYs=lastScrollYs+percent;
//alert(lastScrollY);
}
//下面这段删除后，对联将不跟随屏幕而移动。
window.setInterval("heartBeat2()",1);