很诡异的overflow:hidden 与fixed问题
<!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=gb2312" />
<title>test</title>
<script type="text/javascript" src="http://img.jb51.net/jslib/jquery/jquery.js"></script>
<style type="text/css">
body{padding:10px;margin:0;}
#box{width:200px; height:200px; float:left; overflow:hidden;margin:0 auto; background:#9C0;}
.box2{ width:200px; height:300px; overflow:hidden; background:#CCC; position:fixed;}
</style>
</head>
<body>
<div id="box">
<div class="box2"></div>
</div>
</body>
</html>