style width/tables/banners

[bp323]

Currently im looking to learn what the current skin i have, is setup as. I know the pixel with is 983. is there anyway to make this self adapting & not needing a supplied pixel width? what i would like to do is split the current banner into a 3/4 size & have a time delayed rotating banner along the right of it in the remaining 1/4.
If anyone can give me further advice on what routes or modifications i need to perform i would be indebted to them.

Thanks

below is a copy of my current code running under VB ver. 3.6.4

<!-- logo -->
<a name="top"></a>
<table border="0" width="$stylevar[outertablewidth]" cellpadding="0" cellspacing="0" align="center">
<tr>
<td><a href="index.php"><img src="images/redbar/elements/cplogo.jpg" border="0"></a></td>
</tr>
<tr>
<td background="images/redbar/elements/catsub.jpg" height="24" class="menu">
<center>
<a href="index.php">Forum Home</a> &nbsp;&nbsp;
<if condition="$show['member']">
<a href="usercp.php">User Panel</a> &nbsp;&nbsp;
</if>
<if condition="$show['registerbutton']">
<a href="register.php">Register</a> &nbsp;&nbsp;
</if>
<a href="memberlist.php">Member List</a> &nbsp;&nbsp;
<a href="calendar.php">Calendar</a> &nbsp;&nbsp;
<a href="faq.php">FAQ</a> &nbsp;&nbsp;
<if condition="$show['member']">
<a href="search.php">Search</a> &nbsp;&nbsp;
</if>
<if condition="$show['member']">
<a href="login.php?$session[sessionurl]do=logout&amp;logouthash=$bbuserinfo[logouthash]" onclick="return log_out()">Logout</a>
</if>
&nbsp;&nbsp;
<a href="vbpicgallery.php">Vb Gallery</a>
&nbsp;&nbsp;
<a href="itrader_main.php">$vbphrase[itrader]</a>
&nbsp;&nbsp;
<a href="aim:gochat?roomname=clubprotege+Chat">Aim: Chatroom</a>
&nbsp;&nbsp;
<a href="search.php?$session[sessionurl]do=getnew" accesskey="2">$vbphrase[new_posts_nav]</a>
</center>

</td>

</tr>
<tr>
<td width="983">
<!-- /logo -->