image mapping my custom background(not just post or page but CUSTOM BACKGROUND)

Hello.

i use fastfood theme as my wordpress theme.
That theme gives me the choice to upload an image from a url or my computer and use it as background.

I’m trying to map my background image and make some of his parts clicable but so far i haven’t manage to..

Could you help me please;

Thank you, best regards.

epi4ce