Finding your browsing to be a little cramped? Want some room to stretch your legs or just see more of the web page you might be currently visiting? FlexBar, a new add-on for Firefox, will give you all the screen space saving tools and resources you need at the touch of a button.
Once FlexBar has been installed, you can very easily configure the visibility of all your menu bars, sidebars, and information bars in Firefox. You can choose to always show, never show or just hide any toolbar in the Firefox interface too.