When in a need for comprehensive flash detection information for exactly the same scenario (client wants flash based navigation), I found the following to be helpful. http://www.moock.org/webdesign/flash/detection/moockfpi/ We ended up making the navigation in Flash, which was a set of "revealing tabs" in a bar - for the non-flashers, an image-mapped GIF with all of the tabs open was used. The results weren't as tested as they could have been, but no complaints have been heard either. Here's the site we did with the flash navigation: http://www.waynefarmsllc.com/index.cfm?display=wf_products Here's the GIF that shows up for non flashers: http://www.waynefarmsllc.com/images/nav.gif