日期:2014-05-16 浏览次数:20603 次
<html>
<head>
<title></title>
</head>
<body>
<div style="height:960px;background:#330000;">teatteat</div>
<div id="t" style="height:24px;background:#000000;color:#ffffff;text-align:center;">teatteat</div>
<div style="height:960px;background:#333333;">teatteat</div>
<script type="text/javascript">
document.body.onscroll=function(){
if(document.body.scrollTop>=document.getElementById("t").offsetTop){
document.getElementById("t").style.position="absolute";
document.getElementById("t").style.top=document.body.scrollTop;
} else {
document.getElementById("t").style.position="static";
document.getElementById("t").style.top=document.body.scrollTop;
}
}
</script>
</body>
</html>