ajouter un clip qui pointe vers le centre de la scène

var rotX:Number = 290;
var rotY:Number = 140;
var Centre:Number = Stage.height/2;
var vitesse:Number = 0.1;
var sceneW:Number =Stage.width;
var sceneH:Number = Stage.height;
var nbI:Number=5;
var angle:Number=1;
var i:Number;

var lightning:MovieClip = this.attachMovie("lightning", "lightning", 1000);
lightning._alpha = 0;

var videostopped:Boolean = false;

for(i=0;i<nbI;i++)
{
   //_____________________
   var button:MovieClip = this.attachMovie('Icone'+i,'Ic'+i,i);

   //_____________________
   button.onRelease= onRelease;
   button.onRollOut = onRollOut;
   button.onRollOver = onRollOver;
   button._y = sceneH /2;
}
//_____________________test

function onRollOver():Void {
        //je veux ajouter le"lightning" MovieClip entre le centre et le bouton concerné.	
   lightning._alpha = 100;
   videostopped = true;
}

function onRollOut():Void {
        //puis l'enlever...
   lightning._alpha = 0;
   videostopped = false;
}

onEnterFrame=function(){
	
	if (!videostopped) {
		 //_____
	 if (angle > (2*Math.PI))
	 {
		 angle = 0;
	 }else{			 
	 	for(i=0; i<nbI; i++){

			//_____________________angle on x axis
			this['Ic'+i]._x=rotX*Math.cos(angle+2*Math.PI*i/nbI)+sceneW/2;
			
			//_____________________angle on y axis
			this['Ic'+i]._y=rotY*Math.sin(angle+2*Math.PI*i/nbI)+sceneH/2;
			
			//_____________________Speed
				angle=angle+(sceneW/180)/sceneH*vitesse;
					} 
					}
}
}