I is it possible to dowload the new version of Firefox and keep 3.6.28 as well ? How would I do that?

I have Firefox 3.6.28 and like it. I want to download the newest version because some sites aren't going to be supporting the old one. I want to keep 3.6.28 and not have the new one replace it. Can I download the new one without replacing 3.6.28 so I have both?

See this article about how to install multiple versions on Mac OS X:
* http://www.businessinsider.com/how-to-run-firefox-4-and-3-simultaneously-in-mac-os-x-with-multiple-firefox-profiles-2011-3
You can find the latest Firefox release in all languages and for all Operating Systems here:
*Firefox 15.0.x: http://www.mozilla.org/en-US/firefox/all.html
*Firefox 3.6.28: http://www.mozilla.org/en-US/firefox/all-older.html

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