lastScrollY=0;
function heartBeat(){
diffY=document.body.scrollTop;
percent=.3*(diffY-lastScrollY);
if(percent>0)percent=Math.ceil(percent);
else percent=Math.floor(percent);
document.all.lovexin1.style.pixelTop+=percent;
document.all.lovexin2.style.pixelTop+=percent;
lastScrollY=lastScrollY+percent;
}
function hide(id)  
{   
if(id==1){lovexin1.style.visibility="hidden"; }
if(id==2){lovexin2.style.visibility="hidden";}
}
window.setInterval("heartBeat()",1);