Random drop stuff

how do i make movie clips randomly fall from the top of the screen
(a certain amount in a certain time then it stops after the time)

thx in advance,
yhack

Ive got the code for makin it fall…

on the thing thats falling

onClipEvent (load) {
 function reset() {
  this._x = random(500);
  this._y = -50;
  enemySpeed = random(9)+7;
  this.gotoAndStop(1);
  this._visible = 1;
 }
 reset();
}
onClipEvent (enterFrame) {
 if (this._y>400) {
  reset();
 }
 if (this.hitTest(_root.catcher)) {
 _root.drops = _root.drops+1;
 }
 this._y += enemySpeed;
}

my problem now is when i catch the water i need it so it only adds one to “drops” instead of 5 or something

if (this.hitTest(_root.catcher)) {
 _root.drops = _root.drops+1;
 }