Hope someone can shed some light on what I'm doing wrong.

I'm following this tutorial: http://tympanus.net/codrops/2010/04/...n-with-jquery/
and here is my attemp: http://organicwebdesigns.co.uk/wp-co...ness/payme.php

It doesn't work when you over over the menu and the sub menu's don't appear. As far as I'm aware I've placed files and codes and images and paths in the write places but can't figure out what is wrong
Appreciate any help
Many thanks