Add Firefox To Jaunty Notifications In 9.04

I like the new visual notifications in Ubuntu 9.04’s panel.  However, this only works for selected processes and programs.  An Ubuntu user has created an extension to add Firefox notifications to Jaunty’s panel.  This is very useful and will hopefully lead to other programs adapting similar extensions.

(Or do they already?  Is there an easier way to get my programs to use Jaunty’s notifications in the panel?)