Custom code help

[HPIA]

<!-- member announcements message -->
<if condition="$show['member']">
<table class="tborder" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="65%" align="center">
<thead>
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	<td class="tcat" align="center"><center><b>HP In Action Forum Announcements</center></b></td>
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		<td class="alt1" align="center">
The shoutbox has been moved to the <b><a href="http://www.hpinaction.com/forumdisplay.php?f=7">Library Cafe</a></b>. None of the changes work in the <b>Firefox skin</b>, but should be fine everywhere else. Errors <u>need</u> to be reported. 
</tr>
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		<td class="alt2" align="center">
The forums have been getting a lot of, as some say, "pimping out" to them. If you see something out of place, do not be alarmed.
</tr>
<tr>
		<td class="alt1" align="center">
Hogsmeade admittance now requires about 200 posts and above. Up from the previous 150.
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	</thead>
</table><br />
</if>
<!-- / member announcements message -->

Hey! I made that code above me, but I want to know how to make it collapsable like a forum or something. Anyone know what I need to do? I can't figure it out...thanks!