Create a multilevel Dropdown menu with CSS and improve it via jQuery

Some of you might have noticed, I have a partiality for sleek menus. As I recently had to create a multi level dropdown menu for one of my customers, I wanted to improve it with a little bit of jQuery, but couldn’t find a script that accomplished what I needed.

So I decided to build this menu from scratch and share my thoughts as well as the code with you.
http://www.kriesi.at/archives/create-a-multilevel-dropdown-menu-with-css-and-improve-it-via-jquery