`

浮动层

 
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<!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>jquery浮动层</title>
<style type="text/css"> 
#Float {background-color: #000;height: 200px;width: 100px;position: absolute;top: 80px;right: 20px;}
</style>
</head>
<script type="text/javascript" src="http://www.codefans.net/ajaxjs/jquery-1.6.2.min.js"></script>
<script language="javascript"> 
$(document).ready(function(){
	$(window).scroll(function (){
		var offsetTop = $(window).scrollTop() + 80 +"px";
		$("#Float").animate({top : offsetTop },{ duration:500 , queue:false });
	}); 
}); 
</script> 
<body>
<div style="height:2000px;"></div>
<div id="Float" style="color:#ffffff">我在浮动</div>
</body>
</html>

 

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