Need help with positioning in Netscape 7

I'm having trouble with positioning in Netscape 7.02. It looks the way I
want it to in IE 6, Opera and iRider, but in Netscape and Mozilla, the MENU
drops way too low. Also, in Netscape the background image (a logo at the
top of the page) is getting covered up by the #main content.

Any help would be greatly appreciated.

Here's the URLs to both the page and the CSS file.
http://www.flashsongs.com/EPOXYFILMS_COM/index.html
http://www.flashsongs.com/EPOXYFILMS_COM/epoxy.css

Thanks,
CRjr