Before going to these links keep in mind several points. The first is that the presentation may not match what you need in respect to your own websites design. You will have to be creative and change colors, borders, and possibly even images. One more thing is typically you get what you pay for; or donít pay for. Free rarely comes with support. Paying for a product typically means you will get support. In some cases, for an added fee, custom work will be available. It certainly never hurts to ask a question. In any case, enjoy, good luck.
Milonic - drop down menu
UDM4 - Ultimate Drop-down Menu 4 Compicated, big website with a ton of knowledge and examples.
Open Cube another pay script - the best site - my favorite.
Cool Dev really like this place