Stop Ghostery button changing size

The Ghostery addon keeps track of the various advertising, analytic and social trackers present on the pages you visit. It gives you information about the trackers and the ability to toggle the blocking of each one individually.

The one gripe I have with this terrific addons is that the button it uses, at least in Firefox, changes width depending on if the page you're on have trackers or not. Call me nit-picky but stuff like this is really irritating to me.

Thankfully Firefox is fantastically customizable (at least until Australis hits :/ ) so it's fixable.