<dl>
<dt>When I click this, I want to show and hide the "<tr>" marked # </dt>
<dd>
<table>
# <tr>
# </tr>
<tr>
<td colspan="x">
<table>
<tr>
</tr>
</table>
</td>
</tr>
# <tr>
# </tr>
<tr>
<td colspan="x">
<table>
<tr>
</tr>
</table>
</td>
</tr>
</table>
</dd>
</dl>