Image Maps
When you have quite a constrictive CMS as I do in work and you want to make sections of a single image into links, the easiest way is to make an image map and this website does a pretty good job of it!
just remember to go into the HTML and edit the image source as they only keep it on their server for 2 days and you may then wonder why you have broken images.
What I know and what I have learnt 