Random Moves .X MCs

programming flash
1

Hi

Im using this to move randomly my objects, but it moves very fast by 35 fps!!

onClipEvent (load) {
 //this sets the initial x position of our clip
 this._x = 10;
}
onClipEvent (enterFrame) {
 //this makes the clip go crazy
 this._alpha = random(100);
 this._x = random(500);
 this._x += 5;
}

Can some bosy help me making a coupple of MC to move randomly nice and Slow.

Thnx a lot.
Enjoy