怎样用div＋css来代替这个表？

[edwardrong]

<table border="1px"bgcolor='#DFE4F4'>
<tr>
<th rowspan="3">a</th>
<th rowspan="3">a</th>
<th rowspan="3">a</th>
<th>a1</th>
<th>a2</th>
<th>a3</th>
<th rowspan="3">a</th>
</tr>
<tr>
<th>b1</th>
<th>b2</th>
<th>b3</th>
</tr>
<tr>
<th>b1</th>
<th>b2</th>
<th>b3</th>
</tr>
</table>

[飘零雾雨]

try:

======================================

<style>
div{border-top:1 solid #767676;border-left:1 solid #767676;border-bottom:1 solid #767676;background:#e1e1e1;float:left;}
div div{border:1 solid #767676;width:5px;height:77}
div div div{width:10px;;height:25}
</style>
<div style="border-right:1 solid #767676;">
<div>a</div>
<div>a</div>
<div>a</div>
<div>
<div>a1</div>
<div>b1</div>
<div>c1</div>
</div>
<div>
<div>a2</div>
<div>b2</div>
<div>c2</div>
</div>
<div>
<div>a3</div>
<div>b3</div>
<div>c3</div>
</div>
<div>a</div>
</div>