I don't have any feedback, but I'll tell you now that you don't need AJAX to do this. AJAX is more for realtime loading, which this isn't.
A simple shot of good 'ol Javascript will work fine, and the content can just be fetched and switch'd from a database, to display the appropriate images.
I'm willing to take the job, but I understand it isn't likely.
Regards,
shellh00k