FF3 update Rated 5 out of 5 stars

I have updated this extension to work with FF3, and sent the changes to the developer. Until he publishes the update, you can find it at: https://vmacs.vmth.ucdavis.edu/userpages/compsrv/firefox-extensions/allowclipboardhelper.xpi

This review is for a previous version of the add-on (0.5.5).