qq悬浮代码(兼容各个浏览器)_javascript技巧

//alert(diffY);
percent=.1*(diffY-lastScrollY);
if(percent>0)percent=Math.ceil(percent);
else percent=Math.floor(percent);
document.getElementById("ad_left").style.top=parseInt(document.getElementById

("ad_left").style.top)+percent+"px";
document.getElementById("ad_right").style.top=parseInt(document.getElementById

("ad_left").style.top)+percent+"px";

lastScrollY=lastScrollY+percent;
//alert(lastScrollY);
}
function hidead(num)
{
showad = false;
if(num==1)
document.getElementById("ad_left").style.display="none";
else if(num==2)
document.getElementById("ad_right").style.display="none";
}
var ClosebuttonHtml1 = '关闭';
var ClosebuttonHtml2 = '关闭';
ad1=""
ad2="
";
document.write(ad1);
document.write(ad2);
window.setInterval("heartBeat()",1);