Prova questo:

Codice PHP:
package {
    
import flash.display.MovieClip;
    
import flash.utils.Timer;
    
import flash.events.Event;
    
import flash.events.TimerEvent;


    public class 
Main extends MovieClip {

        private var 
clips_array:Array;
        private const 
SPRING:Number=.1;
        private var 
timer:Timer;
        public function 
Main() {
            
init();
            
initTimer();
            
entra_btn.addEventListener(MouseEvent.CLICKlink_01);
        }

        private function 
init():void {
            
stage.frameRate=31;
            
bg_mc.x=0;
            
bg_mc.y=0;
            
bg_mc.width=stage.stageWidth;
            
bg_mc.height=stage.stageHeight;
            
clips_array=new Array(mc_clip_0,mc_clip_1,mc_clip_2,mc_clip_3,mc_clip_4,mc_clip_5);
        }

        private function 
initTimer():void {
            
timer=new Timer(400,0);
            
timer.addEventListener(TimerEvent.TIMER,go);
            
timer.start();
        }

        private function 
go(evt:TimerEvent):void {
            var 
n:Number=Math.floor(Math.random()*clips_array.length);
            var 
clip:MovieClip=new clips_array[n]; ;

            
clip.x=Math.random()*stage.stageWidth;
            
clip.y=-clip.height;
            
clip.center=clip.x;
            
clip.vel_x=2+Math.random()*10;
            
clip.vel_y=clip.vel_x;
            
clip.angle=0;
            
addChild(clip);

            
clip.addEventListener(Event.ENTER_FRAME,goDown);
        }

        private function 
goDown(evt:Event):void {
            var 
acc_x:Number=(evt.target.center-evt.target.x)*SPRING;
            
evt.target.vel_x+=acc_x;
            
evt.target.x+=evt.target.vel_x;
            
evt.target.y+=15-evt.target.vel_y;
            
evt.target.rotation++;
            var 
sine:Number=Math.sin(evt.target.angle);
            
evt.target.scaleX=sine;
            
evt.target.angle+=.1;
            if (
evt.target.y>=stage.stageHeight+100) {
                
evt.target.removeEventListener(Event.ENTER_FRAME,goDown);
                var 
m:MovieClip=evt.target as MovieClip;
                
removeChild(m);
            }
        }
    }
    function 
link_01(event:Event):void {
        
navigateToURL(new URLRequest("home.html"),"_self");
    }

L'eventListen è messo sulla funzione principale, la funzione alla fine... Dovrebbe funzionare.


CIAO