links not working in firefox

hey /prog/,
I have a problem: my site www.matthaspictures.com dosent work in firefox. well, everything works except for the links in the tabs. they turn into plain old text and i dont know why. it works perfectly in IE, but has the same problem in safari.

I didnt use a page generator of any kind, hand coded the whole thing from scratch. any idea whats going on? thanks so much!

You need to use XHTML for that.

Well Matt, Firefox recognizes that your art is shit.

>>2
what do you mean?

i was lookin online and i read that it might be the z-index of my css div's. all the tabs that arent active are -100 in the z-index. would that affect my ability to click on links?

>>5
Yes. Stop doing that.

>>6
thanks, but care to explain?

Web design isn't programming.

>>8
Actually, ECMAScript is Turing-complete.

>>9
yeah, but what about html and css? they're rubbish langauges and you know it.

>>10
you can put XSLT in XHTML. XSLT is Turing complete and supported by every browser that isn't complete shit, and even some that are.

Don't worry matt, it is also fucked in chrome. Also, your art is shit.

You use the fucking center tag faggot. Don't be such a faggot.

Fact: <center> was created by communists^TM. It was originally designed for killing small children.

In all seriousness, you should really rewrite this page. It's horrid to say the least. Forcing people to only view in Internet Explorer 7 is not a good idea. (Despite IE being the browser with the biggest market share.) If say someone with Firefox, Opera, Safari, etc. come to check your site and see that it breaks in their browsers, they won't be too willing to launch IE just to see your site and you'll lose a lot of potential viewers this way.

>>1
Your art is bad and you should feel bad.