[HTML] Div align center

Refer to the page:
http://www.webtech.tw/info.php?tid=45

1. For FireFox、Chrome、Opera:
margin: 0px auto;

2. For IE8:
<div style="text-align:center;">
　<div style="margin:0 auto;border: 2px solid blue; width:150px;">這裡是文字</div>
</div>

3. For IE7:
*margin: 0px auto;

4. For IE6:
_margin: 0px auto;