Firefox 5 worked with Fedtraveler.com but after Firefox was upgraded it no longer works. It comes back with a webpage that says my browser is not correctly configured and talks about a TLS error about TLS 1 not being enabled. I double checked under preferences and TLS 1.0 was/is enabled. The webpage also indicates it is only compatible with Firefox 3.0, but it did work with Firefox 5. The website does not work with Safari at all. Last time I had to get Fedtraveler, I had to revert to Firefox 3.6 which was a real pain, because when I got back to the current version of Firefox all my current session tabs were lost. I had to recover using Time Machine. Any suggestions on how I can access this Fedtraveler.com or make the current version of Firefox act like Firefox 5 to this website, or on how I could run an older version of Firefox but not affect my current open session/tabs?