Drop Down Additional Navbar??

[paul41598]

I have a project I'm working on and in my forum home plugin I'm calling a template with this code:

I'm able to get the arrow icon and such..but I need the dropdown to work. Right now it doesnt. I want to add sub menu's like the navbar. What am I missing? NO code is currently in my navbar to assist with this. I'm guessing the navbar should have nothing to do with this since its almost a seperate navbar or table really.

<table class="tborder" cellpadding="$stylevar[cellpadding]" cellspacing="$stylevar[cellspacing]" border="0" width="100%">
<tr>
<td id="threads" class="vbmenu_control">
<a href="#" accesskey="4" rel="nofollow">Threads</a> <script type="text/javascript"> vbmenu_register("threads"); </script>

</td>
</tr>

<tr>$threadbits</tr>
</table>