Just put it in as a giant jpeg image map. By the time you type up all those <divs> and css styles it'll be the same size anyways. Also, you can be assured you

Just put it in as a giant jpeg image map. By the time you type up all those <divs> and css styles it'll be the same size anyways. Also, you can be assured your users are getting it exactly how you intended. No cross browser headaches. Almost no code! Ajax is a snap, just swap the image out with one line of javascript code, you won't even need Dojotype to do it.