js实现两侧广告条幅 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>两侧广告条幅</title>
<style type="text/css">
*{padding:0px;margin:0px;}
#ad,#ad1{background:#09F;}
</style>
</head>

<body >

<div id="ad" style="width:141px;height:218px;position:absolute;background:#09F;">
</div>
<div id="ad1" style="width:141px;height:218px;position:absolute;right:0px;background:#09F;">

</div>
<div id="time" style="background:#999; height:2000px;">
</div>
<script type="text/javascript">

var s=0;
function change(){
    //alert(bodyScroll)
    var bodyScroll=document.documentElement.scrollTop
    h=Math.ceil(0.1*(bodyScroll-s));
    s=h+s;
    document.getElementById("ad").style.top=100+s+"px"
    document.getElementById("ad1").style.top=100+s+"px"
}
function off(){
    document.getElementById("ad").style.display="none";
    
}
function off1(){
    document.getElementById("ad1").style.display="none";
}
setInterval("change()",10)
</script>
</body>
</html>
posted @ 2012-04-20 17:42  lines  阅读(957)  评论(0)  编辑  收藏  举报