Phantom Spacer

OK. I am working on a layout/design for a client at http://www.halocorner.com/igaming. We are both perplexed by the little space where the background shows through in between the menu and the content area. If you guys could check out the source and let me know what you see, that would be great. Thanks.

http://www.halocorner.com/igaming
Stylesheet: http://www.halocorner.com/igaming/templates/template_css.css

Thanks...

EDIT: if you need to see php source files, reply or PM me

Makes no sense. No clue why it is there. Hope someone can found out why.

No ideas?