A css item called word-wrap that you can use to make long text wrap
word-wrap: break-word;
Example
<table width=”200″ border=”1″>
<tr>
<td width=”200″ style=”word-wrap:break-word;” >
<div style=”width:200px;”>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
</div>
</td>
<td> </td>
</tr>
</table>