title: How can I test with multiple versions of Firefox?
body: <p>How can I test my website in multiple versions of firefox?
  I have v2 installed. Now no matter where or how many times I install FF3, it always executes ff2..</p>
  
  <p>I checked the interweb and it seems there used to be a MultiFireFox tool that could run several versions. It was for apple and I'm on windows. Furthermore all the links to it are dead.<br>
  I also found an option I could add to the executable. But since I cannot start FF3 to begin with, I reckon this doesn't make much sence.</p>
  
  <p>Something like <a href="http://tredosoft.com/Multiple_IE" rel="nofollow noreferrer">MultipleIE</a> would be great.
  Suggestions?</p>