Can someone help me out??

I have just finished working on a new site for AviaCapital @ www.aviacapital.com

I have a small problem i would like to fix.

The page that is causing an issue is:

www.aviacapital.com/puzzle.htm

As you will see the side navigation side menus are coming up behind the puzzle......how do I get then to come up in front?

Hope someone can help...??