Demande d'aide pour une Galerie PaperVision3D avec XML

import org.papervision3d.scenes.*;
import org.papervision3d.cameras.*;
import org.papervision3d.objects.*;
import org.papervision3d.materials.*;
import flash.display.Sprite;
import flash.events.MouseEvent;

var container:Sprite = new Sprite();
container.x = stage.stageWidth * 0.5;
container.y = stage.stageHeight * 0.5;
addChild(container);

var scene:Scene3D = new MovieScene3D(container);
var cam:Camera3D = new Camera3D();
cam.zoom = 5;

var p_dict:Dictionary=new Dictionary();
var pc:Plane = new Plane();
pc.visible = false;
cam.target = pc;

var numOfRotations:Number = 2;
var yPos:Number = 0;
var angle:Number = 0;

var filename_list = new Array();
var folder:String = "thumbnails/";

var i:Number;
var total:Number;
var galerie_xml:XML = new XML();
var loader:URLLoader = new URLLoader();
loader.load(new URLRequest("thumbnail_list.xml"));
loader.addEventListener(Event.COMPLETE, create_thumbnail);

function create_thumbnail(e:Event):void 
{
	galerie_xml = XML(e.target.data);
	total = galerie_xml.thumbnail.length();
	var anglePer:Number = ((Math.PI*2) * numOfRotations) / total;
	
	for( i = 0; i < total; i++ )
	{
		var bfm:BitmapFileMaterial = new BitmapFileMaterial(
			folder + galerie_xml.thumbnail[i].@filename.toString());
		bfm.oneSide = false;
		bfm.smooth = false;
		var p:Plane = new Plane(bfm, 140, 105, 2, 2);
		scene.addChild(p);
		var p_container:Sprite = p.container;
		p_container.name = "galerie_" + i;
		p_dict[p_container] = p;

		p_container.buttonMode = true;
		p_container.addEventListener( MouseEvent.ROLL_OVER, p_rollover );
		p_container.addEventListener( MouseEvent.ROLL_OUT, p_rollout );
		p_container.addEventListener( MouseEvent.CLICK, p_click );
		p.x = Math.cos(i * anglePer) * 400;
		p.z = Math.sin(i * anglePer) * 400;
		p.y = yPos += 40;
		p.rotationY = (-i*anglePer) * (180/Math.PI) + 270;
		
	}
}

function p_rollover(me:MouseEvent) 
{
	var sp:Sprite = me.target as Sprite;
	sp.alpha = 0.4;
	var s_no:Number = parseInt(sp.name.slice(8,10));
}
function p_rollout(me:MouseEvent) 
{
	var sp:Sprite = me.target as Sprite;
	sp.alpha = 1;
}
function p_click(me:MouseEvent) 
{
	var sp:Sprite = me.target as Sprite;
	trace(sp.name);
	
	
	cam.zoom = 16;
	
	
	var s_no:Number = parseInt(sp.name.slice(8,10));
}

addEventListener(Event.ENTER_FRAME, render);

function render(e:Event):void
{
	var dist:Number = ((stage.mouseY) - stage.stageHeight * 0.5) * -0.1;
	var dist2:Number = ((stage.mouseX-160) - stage.stageWidth * 0.5) * 0.00025;
	angle += dist2;
	cam.x = Math.cos(angle) * 760;
	cam.z = Math.sin(angle) * 760;
	cam.y += dist;
	if(cam.y < 100) cam.y = 100;
	if(cam.y > 780) cam.y = 780;
	pc.y = cam.y;
	scene.renderCamera(cam);
}