一个上下左右都居中的非table的纯CSS实现代码

<style type="text/css">
#box{width:600px; height:400px; border:1px solid red;}
#box{position:static; *position:relative; display:table; *display:block; }
#box-middle{position:static; *position:absolute; display:table-cell; *display:block; *top:50%; vertical-align:middle; *vertical-align:auto;}
#box-inner{position:relative; top:-50%; background-color:blue; margin:0 auto; width:200px; height:100px;}
</style>

<br/>
<div id="box">
  <div id="box-middle">
    <div id="box-inner">content</div>
  </div>
</div>

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/meizz/archive/2008/11/10/3268988.aspx