It's perfect. Rated 5 out of 5 stars

I've wanted this add-on for, literally, years - since before popups became a problem. Just some little right-there-on-top on/off switch for Java and Javascript. Simple, "stupid", quick, just like I've always wanted...

Also works in Iceweasel (Linux/Debian)

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