CSS menu problem

I have a large ASP.NET app that uses CSS. There are two completely different themes that are available by utilizing two different sets of CSS. The specific problem I have is on my top level menu.? I want the list of loans to appear veritically when hovering over the "Loan" menu item.? Instead, they are appearing horizontally, as if they cant overlay the DIV or something. My normal non CSS expert programmers are stumped. The application is is VS2008.? I am assuming if I give you the CSS files and give you access to the server that is hosting the application you could do your work that way without needing the entire code base. I have attached a screenshot of the problem. I am looking for a person who is a CSS expert who would be available for future work as well. ## Deliverables There are two unique CSS themes.? After you get it working in the first one, you also need to make it work in the second one.? It is broken in both.