the great thing about mozilla firefox 3.0.4 that i download is it can run stand alone. i mean no difficult installation process.
after extracting mozilla firefox-3.0.4 move the entire directory to /usr/lib
then change some link that run firefox.
1. the link in /usr/lib called firefox.. it’s a link to directory /usr/lib/firefox-126.96.36.199
u can change it to another name, example
$mv /usr/lib/firefox /usr/lib/firefox-old
then create a new link to firefox-3.0.4
$ln -s /usr/lib/firefox-3.0.4 /usr/lib/firefox
2. the link in /usr/bin called firefox it links to firefox executable program in /usr/lib/-188.8.131.52
rename so you still have your old firefox
$mv /usr/bin/firefox /usr/bin/firefox-old
create new link
$ln -s /usr/lib/firefox-3.0.4/firefox /usr/bin/firefox
now you can click the menu of firefox and goes to new firefox. if you want to exec old firefox, create a new item menu, or access it from run command.
dont forget all the processes above need root priviledges.