Applescript for toggling Displays Mirroring ON/OFF

I am doing a lot Keynote presentations and my PowerBook doesn’t have enough VRAM to display a Keynote show on only 1 monitor when a second one or a projector is connected. So, I have to turn on mirroring in order to play a keynote presentation.

What I want to do is to turn on/off the mirroring displays feature by only running an script but so far, I haven’t been able to find out if the System Preferences panel is Applescriptable in order to get into the Displays panel.

Any suggestions? :?:[/b]