Show/hide random objects

Hi.

I am looking for some AS3 help, I’m very new to Flash in general so this is probably above my skill level.

Basically I have 3 separate movieclips, called random1, random2 and random3 for the sake of this.

I want, at the start of the frame to pick one of the three objects at random, keep that object visible, and hide the other 2.

Any help would be very much appreciated.