Help with menu issue

I have a site I’m working on that has a simple swish menu:
IDI site

The clients wants to have the menu show up as an image map with links on the image if the user doesn’t have Flash installed. Any ideas on how to achieve this? They don’t want the detect flash and send to another url if not detected. They want a detect flash, if no flash, than replace swf image with a jpeg image with image mapping for the menu.

I know it would be some type of script to replace the swf file with the jpeg or something, but I’m stumped.