Simple Problem Needs Immediate Fix!

Hi all, I have been having a great deal of trouble with a gallery causing my navigation menu to collapse. Everything works great except when I try and open one of the galleries it closes my websites navigation menu. Please view it here. [login to view URL] All you will need to do is make my navigation stop collapsing and have everything else work the same. Think you can do it? Should only take someone with some experience a few minutes to make a quick $30. PLEASE RESPOND QUICKLY, I NEED THIS DONE RIGHT NOW. SO IF YOU CANNOT DO THIS IMMEDIATELY DO NOT BID. PLEASE USE THE WORD "MAX" IN YOUR BID SO I KNOW YOU ARE FOR REAL.