help with Dreamweaver menu dropdown

I am designing a new site for someone and she wants a very simple dropdown in part of the top index but I am having major problems getting it to work. The dummy site is set up at [login to view URL] and the drop down part is meant to be where it says galleries. I have just set it up for testing at the moment but it will have 5 pages detailed in the dropdown. This will be a very easy job for someone that knows what they're doing as I really just need a bit of guidance as to where I'm going wrong.