Conditional product menu

I saw a menu on this site http://www.royaltycore.com/
scroll down where it says "Find your Grille"
It populates the 2 menus based on previous selections.
So before hiring someone I am trying to create something similar with different products so I copied the page and left all the scripts in tact since I wasn't sure on what was safe to remove.
http://virtualgeorge.info/test2/menu-test.htm
So I uploaded and loaded that page in chrome and it shows its trying to load from…
Conditional product menu

See original post by bellcom