Best way to speed a javascript tab setup

Best way to speed a javascript tab setup

<table width="960" align="center">
<tr>
<td class="Tabs" onClick="Tabs('main')">Main</td>
<td class="Tabs" onClick="Tabs('missions')">Missions</td>
<td class="Tabs" onClick="Tabs('territory')">Territory</td>
<td class="Tabs" onClick="Tabs('bank')">Bank</td>
<td class="Tabs" onClick="Tabs('godfather')">Mobfather</td>
<td class="Tabs" onClick="Tabs('fight')">Fight</td>
<td class="Tabs" onClick="Tabs('hitlist')">Hit List</td>
<td class="Tabs" onClick="Tabs('equipment')">Equipment</td>
<td class="Tabs" onClick="Tabs('hospital')">Hospital</td>
<td class="Tabs" onClick="Tabs('my_mob')">My Mob (<?php echo $mob
?>)</td>
<td class="Tabs" onClick="Tabs('my_mobster')">My Mobster</td>
<td class="Tabs" onClick="Tabs('mademen')">Made Men</td>
</tr>
</table>
I am trying to figure out where lag is coming from and what I have come to
is that I think the tab setup is not right. And pointers on how to get the
tabs to speed up and be a little more responsive. When clicking on the tab
to get to the page at times it lags.