I must say that is a doosy. I use Mozilla 1.3 and your page CRASHES MOZILLA! the application to the familiar "Microsoft has detected a problem, send or don't send...." Anyway before it crashed I got a message that there was an error loading the flash file. I would go back and make sure your flash file is not corrupted, i.e. try opening it alone in a browser and see what happens/recompile the flash project etc.
Life is like a box of chocolates, sweet