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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>模拟position:fixed效果的原理</title>
<style type="text/css">
div { height:100px; width:100px; overflow:auto; border:1px solid #000;}
</style>
</head>
<body>
<div><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /></div>
↑你滚你的,我雷打不动
</body>
</html>
CSS代码...
JS代码...
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