Make button stay in the hit-state

Does anyone know if therer is an easy way to make the “hit state” of a button/movieclip to stay down when you have clicked on it, and stay that way untill you click another buttun. This is an “effect” that has been used in basic html for ages. A nice and easy way to show which page you are on while navigating around.

For an example, check out:

Hope someone can help me with this litle problem :slight_smile: