A basic and properly structured HTML/CSS drop down menu can serve you just as well. In fact, it may make your site appear more responsive to not use animations and instantly display the menu instead.

Meet XP.css — a gorgeous new CSS library that makes it painfully easy to design user interfaces in the likeness of Windows XP.

jsFiddle lets developers play with the three core elements of Web development. Check out this powerful application for rapid prototyping and testing.