Firefox extension toolbar sprite
Here is a generic image of the sprite needed for the toolbar in a firefox extension. It has three states
as a part of the sprite.
Middle: is the :hover state of the button
Bottom: is the :active state of the button Just add your icon on top of these three states in the exact same place (so it does not jump on rollover, etc) and export as png.
This image works with the standard css provided by firefox, so no need for adjustment.
