The Author of this JQuery beauty is Bedrich Rios.

My name is Bedrich Rios and I design and develop web sites for a living. I love coding as much as I love designing. Feel free to contact me with job offers, compliments, or questions. I get way too many emails per day but I promise to get back to you as soon as I can.

http://net.tutsplus.com/html-css-techniques/how-to-create-a-mootools-homepage-inspired-navigation-effect-using-jquery/

There is a fantastic little tutorial that I do not need to redo. He lays it all out step by step and provides the source code, demo, and a tutorial.

I have used his menu before, so here I pay my thanks for a great tool.