Just does like it says Rated 5 out of 5 stars

After leaving Google Chrome and returning to Firefox, I realized that I loved the way Chrome economized on screen real estate. This add-on gave me just what I liked about Chrome. You have to hide the menu bar first, and then your FF window looks sleek just like Chrome does--with the support community that Chrome utterly lacks.

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