First, this is Fedora mailing list, not Firefox mailing list...
As for installing firefox extensions (a.k.a. add-ons):
They're supposed to be in .xpi format, not .jar
Try this:
* In Firefox, go to Tools->Add-Ons
* drag the new add-on into the newly opened window
* installation box should appear
yk wrote:
Hi there!
I find there's no way to install firefox add-ons from local disk after
download some .jar extensions
I tried google ,and find the site below claims it's capable to do
this,but it let me down
http://www.mneptok.com/static/firefox-install-theme.html
BTW: I'm using fc6+Gnome+firefox2.0.0.4.
Any suggestion?