Change the top half of your code:
Code:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>RSPCA Victoria: Home</title>
<link href="1rspcavic_style.css" rel="STYLESHEET" type="text/css">
<!-- ULTIMATE DROPDOWN MENU v4.2 by Brothercake -->
<!-- http://www.udm4.com/ -->
<!-- Courtesy of SimplytheBest.net - http://simplythebest.net/scripts/ -->
<script language="javascript" src="sniffer.js"></script>
<script language="javascript1.2" src="custom.js"></script>
<script language="javascript1.2" src="style.js"></script>
</head>
<body topmargin=0 leftmargin=0 bgcolor="#FFFFFF">
<script language="javascript1.2" src="menu.js"></script>
<table width="800" border="0" cellspacing="0" cellpadding="0" align="center">
<form>
<tr>
<td width="700" align="right" bgcolor="#003000"><img src="images/1dot-clear.gif" width="700" height="1" alt="" border="0"><br>
<a class="topnav" href="index.htm">Home</a> |
<a class="topnav" href="https://bne151v.server-secure.com/vs138364_secure/">Donate Online</a> |
<a class="topnav" href="about_us/contact.htm">Contact</a> |
<a class="topnav" href="help_rspca/shop_rspca.htm">Shop Online</a> |
<a class="topnav" href="about_us/careers.htm">Careers</a> |
<a class="topnav" href="site_map.htm">Site Map</a> |
<a href="#" class="topnav">Search</a> </td>
<td width="100" bgcolor="#003000" class="topnav"><img src="images/1dot-clear.gif" width="100" height="1" alt="" border="0"><br>
<input type="text" name="searchstring" size="15" style="font-size: 8px;">
</td>
</tr>
</form>
</table>
<table width="800" border="0" cellspacing="0" cellpadding="0" align="center">
<tr>
<td>
<img src="images/home_main_banner.gif" alt="RSPCA For All Creatures Great and Small" border="0" width="800" height="81"><br></td>
</tr>
</table>
<table width="800" border="0" cellspacing="0" cellpadding="0" align="center">
<tr>
<td bgcolor="#009ACE"><img src="images/1dot-clear.gif" width="1" height="14" alt="" border="0">
</td>
</tr>
</table>
to this:
Code:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>RSPCA Victoria: Home</title>
<link href="1rspcavic_style.css" rel="STYLESHEET" type="text/css">
<!-- ULTIMATE DROPDOWN MENU v4.2 by Brothercake -->
<!-- http://www.udm4.com/ -->
<!-- Courtesy of SimplytheBest.net - http://simplythebest.net/scripts/ -->
<script language="javascript" src="sniffer.js"></script>
<script language="javascript1.2" src="custom.js"></script>
<script language="javascript1.2" src="style.js"></script>
</head>
<body topmargin=0 leftmargin=0 bgcolor="#FFFFFF">
<script language="javascript1.2" src="menu.js"></script>
<table width="800" border="0" cellspacing="0" cellpadding="0" align="center">
<form>
<tr>
<td width="700" align="right" bgcolor="#003000"><img src="images/1dot-clear.gif" width="700" height="1" alt="" border="0"><br>
<a class="topnav" href="index.htm">Home</a> |
<a class="topnav" href="https://bne151v.server-secure.com/vs138364_secure/">Donate Online</a> |
<a class="topnav" href="about_us/contact.htm">Contact</a> |
<a class="topnav" href="help_rspca/shop_rspca.htm">Shop Online</a> |
<a class="topnav" href="about_us/careers.htm">Careers</a> |
<a class="topnav" href="site_map.htm">Site Map</a> |
<a href="#" class="topnav">Search</a> </td>
<td width="100" bgcolor="#003000" class="topnav"><img src="images/1dot-clear.gif" width="100" height="1" alt="" border="0"><br>
<input type="text" name="searchstring" size="15" style="font-size: 8px;">
</td>
</tr>
</table>
<table width="800" border="0" cellspacing="0" cellpadding="0" align="center">
<tr>
<td>
<img src="images/home_main_banner.gif" alt="RSPCA For All Creatures Great and Small" border="0" width="800" height="81"><br></td>
</tr>
<tr>
<td bgcolor="#009ACE"><img src="images/1dot-clear.gif" width="1" height="14" alt="" border="0">
</td>
</tr>
</form>
</table>
This displays fine for me in Firefox and Internet Explorer. I don't have any other browsers to test it with, but I assume it would be okay there too.
Just as an aside, your problem appears to be just an issue with HTML rather than your UDM menu.
Hope this helps.