Does anyone know of an extension that will make it so that the "back" and "forward" gestures on my touchpad work in Firefox? I have a Dell laptop, and they work in IE, but not Fx, which is annoying, since it's a really great feature. Alternatively, does anyone want to write one?

I don't know if this is just on Dell laptops, or just this model, or what, but when I slide to the left across the top of the touchpad, it goes back, and when I slide to the right, it goes forward.