js两栏浮动广告

//定义左联图片的所在位置及其链接目标的地址
var leftsrc = "";
var leftlink = "";
//定义右联图片的所在位置及其链接目标的地址
var rightsrc = "";
var rightlink = "";
//定义“关闭”按钮图片的所在位置
var closesrc ="";

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*/}
percent=.1*(diffY-lastScrollY);
if(percent>0)percent=Math.ceil(percent);
else percent=Math.floor(percent);
document.getElementById("lovexin12").style.top=parseInt(document.getElementById
("lovexin12").style.top)+percent+"px";
document.getElementById("lovexin14").style.top=parseInt(document.getElementById("lovexin14").style.top)+percent+"px";
lastScrollY=lastScrollY+percent;
}
suspendcode12="<div id=/"lovexin12/" style='left:50px;position:absolute;top:10px; cursor:pointer;color:red;'><div onclick=/"document.getElementById('lovexin12').style.display = 'none'; document.getElementById('lovexin14').style.display = 'none';/" style='text-align:center;'><img src=/"" + closesrc +"/" /></div><div onclick=javascript:window.open(/"" + leftlink + "/")><img src=/"" + leftsrc +"/" /></div>诚证全国经销商</div>"
suspendcode14="<div id=/"lovexin14/" style='right:50px;position:absolute;top:10px; cursor:pointer;color:red;'><div onclick=/"document.getElementById('lovexin14').style.display = 'none'; document.getElementById('lovexin12').style.display = 'none';/" style='text-align:center;'><img src=/"" + closesrc +"/" /></div><div onclick=javascript:window.open(/"" + leftlink + "/")><img src=/"" + leftsrc +"/" /></div>诚证全国经销商</div>"
document.write(suspendcode12);
document.write(suspendcode14);

window.setInterval("heartBeat()",1);