// JavaScript Document
lastScrollY = 0;
function heartBeat(){
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-lastScrollY);
if(percent>0)percent=Math.ceil(percent);
else percent=Math.floor(percent);
document.getElementById("OCS").style.top = parseInt(document.getElementById("OCS").style.top)+percent+"px";

lastScrollY=lastScrollY+percent;
//alert(lastScrollY);
}

//下面這段刪除後，對聯將不跟隨屏幕而移動。
window.setInterval("heartBeat()",1);