Just add a new table
in the td
you want. Example: http://jsfiddle.net/AbE3Q/
<table border="1">
<tr>
<td>ABC</td>
<td>ABC</td>
<td>ABC</td>
<td>ABC</td>
</tr>
<tr>
<td>Item1</td>
<td>Item2</td>
<td>
<table border="1">
<tr>
<td>qweqwewe</td>
<td>qweqwewe</td>
</tr>
<tr>
<td>qweqwewe</td>
<td>qweqwewe</td>
</tr>
<tr>
<td>qweqwewe</td>
<td>qweqwewe</td>
</tr>
</table>
</td>
<td>Item3</td>
</tr>
<tr>
</tr>
<tr>
</tr>
<tr>
</tr>
<tr>
</tr>
</table>
_x000D_