Setup a JS image viewer, now my JS dropdown menu doesn't work! help please

Ok here is the development site here:

http://sneakylink.com/d

Notice how on this page, if you hover over 'Bikes', there is no drop down menu - but any other page on the website, the 'Bike' menu will dropdown as normal.

I dont know a ton about JS (I am largely dependent on online tutorials) but I think there is a conflict somewhere.

Any help would be greatly appreciated!

Thanks

Should be asked in jQuery forum. Clearly a jQuery conflict.

Should be asked in jQuery forum. Clearly a jQuery conflict.

Apologies. Ill get it over there now.