This looks like it may be something to do with the colspans attached to the other <td> elements of the table containing the search and the panes not matching up.
What I'd recommend doing is breaking this table for the panes into individual tables based on each of the rows, so they're not linked. This way you can control the layout of the panes without it effecting other <td> elements.
An example fo thsi would be:
original code:
<table>
<tr>
<td>this is table cell</td>
<td>this is table cell</td>
</tr>
<tr>
<td colspan="2">this is a table cell that spans both of the above table cells</td>
</tr>
</table>
New Code:
<table>
<tr>
<td>this is table cell</td>
<td>this is table cell</td>
</tr>
</table>
<table>
<tr>
<td>this is table cell</td>
</tr>
</table>
This way when you change the layout of one set of cells, it will have no effect on any of the other.
You may also want to add classes and id's to the <td> elements so you can control width and other CSS settings.
Hope this helps.
Regards,
Rick.