snycmyride.com does not work with firefox 5

Can we fix syncmyride.com software updates to work with Firefox 5 on the mac, please? It worked with earlier versions. It also doesn't work with Safari or Opera for the Mac. I haven't tried Google Chrome, yet.
Jim Kimmel 09/13/2011
Firefox 6, too, now that it's out (and 7 is on the way...)?