<body>
<script language="javascript">
window.onscroll=function(){
//document.getElementById("divLeft").style.left=100+parseInt(document.body.scrollLeft) + "px";//水平浮动,竟然是上下浮动就不需要了
document.getElementById("divLeft").style.top=100+parseInt(document.body.scrollTop) + "px";//垂直浮动
/*var divleft_float = 100+$('body').scrollTop()+'px'
$('divleft').css('top','divleft_float');jquery实现*/
}
</script>
<body>
<div id="divLeft" style="position:absolute; width:50px; height:50px;left:100px; top:100px;background-color:#0000FF;"></div>
<div style="height:2000px;"></div>
</body>
