ASP.net Flyout menus

We need to creat dynamic flyout menus for our asp.net store. We have recently upgraded to StoreFront 7 and it does not suppor the program that we previously used. The URL of the site is? <[login to view URL]>? the menu on the left needs to be a dynamic flyout menu in each category such as brand, age, price, top sellers and so forth. We have designated brand(manufacturer) in the database as well as categories for age, top sellers etc. We also need the shop by category and all the subcategories to be flyout as well.