var lastScrollY = 0;
var diffY, percent;
function heartBeat() {
//alert(document.body.scrollTop);
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 () {
$('.sideAd').hide();
}
function a() {
$('.sideAd').css({top:100+document.documentElement.scrollTop});
}
$(function () {
   setInterval("a()",1);
})