CSS & Jquery Fix

Hello I need help customizing a jquery gallery on my site: <[login to view URL]> The gallerys look fine on larger resolutions but 1024 and smaller the gallery moves up and obscures the header area. There is also no scroll bar available when this happens. I need help to get the gallery to stay in the same position relative to the container its currently? in and to make sure a scroll bar appears so visitors can access the nav menu at the bottom of the page.