[jQuery] Using slideDown on a TR ignores the colspan amount - why?

[jQuery] Using slideDown on a TR ignores the colspan amount - why?


If I try to run slideDown on a table row that has TD's with multiple
colspan, the colspan amount is completely ignored.
My Table looks like so:
<table>
<tr>
<td> content </td>
<td> content </td>
</tr>
<tr style="display:none" id="hiddenTR">
<td colspan="2"> hidden content </td>
</tr>
</tr>
The javascript code is very simple: $('#hiddenTR').slideDown();
If you try running that code, you will notice that colspan="2" is
ignored, instead it behaves as if colspan="1"
What is the proper workaround? Is this wrong altogether?