Help with Code for Firefox

Hi everyone. I'm updating a website for a friend that was last designed using Frontpage to give an idea how outdated it is. Anyhow, I'm not much of a CSS person and would like help figuring out what's wrong/missing from the code to make it compatible with Firefox, as it currently only works fully with IE.

I've seen similar posts where I guess all you need is to post is a link to your site and then view the source code. If that's right, here is the link to home page http://sub.libvethosp.com

Thank you for your help.

I'd start with your css, you have a couple of errors in template.css which I suspect is causing the logo to not display. Have a look at the css validator results here (http://jigsaw.w3.org/css-validator/validator?uri=http%3A%2F%2Fsub.libvethosp.com%2F&usermedium=all) and sort out the parse errors at the top.

You're also missing a closing img tag here:

<a href="/"><img src="/templates/dogs_cats_v2/images/spacer.gif" width="1" height="1" border="0" id="logo" ></a>


which I doubt is related, but best sort that as well.