ecco tutto il codice
codice:
// Setta l'x e y iniziali delle immagini
_global.thisX = 4.5;
_global.thisY = 10;

var gallery_xml:XML = new XML();
gallery_xml.ignoreWhite = true;
gallery_xml.onLoad = function(success:Boolean) {
	try {
		if (success) {
			var images:Array = this.firstChild.childNodes;
			var gallery_array:Array = new Array();
			for (var i = 0; i<images.length; i++) {
				gallery_array.push({src:images[i].firstChild.nodeValue});
			}
			//x titoli
			var title_array:Array = new Array();
			for (var i = 0; i<images.length; i++) {
				title_array.push({src:images[i].attributes.tit});
			}
			
			//x commenti
			var comment_array:Array = new Array();
			for (var i = 0; i<images.length; i++) {
				comment_array.push({src:images[i].attributes.desc});
			}
			
			displayGallery(gallery_array);
		} else {
			throw new Error("Unable to parse XML");
		}
	} catch (e_err:Error) {
		trace(e_err.message);
	} finally {
		delete this;
	}
};
gallery_xml.load("screenshot/gallery.xml");

/* funizone che crea un loop x ongi immagine nell'array e crea movie clip sullo */
function displayGallery(gallery_array:Array) {
	var galleryLength:Number = gallery_array.length;

	for (var i = 0; i<galleryLength; i++) {
		var thisMC:MovieClip = this.createEmptyMovieClip("image_"+i, i);
		
		// carica l'img
		mcLoader_mcl.loadClip("screenshot/"+gallery_array[i].src, thisMC);
		
		// inserisci il preloader
		preloaderMC = this.attachMovie("preloader_mc", "preloader"+i+"_mc", 5000+i);
		
		preloaderMC.bar_mc._xscale = 0;
		preloaderMC.progress_txt.text = "0%";
		
		thisMC._x = _global.thisX;
		thisMC._y = _global.thisY;
		
		preloaderMC._x = _global.thisX;
		preloaderMC._y = _global.thisY+20;
		
		// se ci sono + di 4 img inizia nuova riga
		if ((i+1)%4 == 0) {
			// reset the X and Y positions
			_global.thisX = 4.5;
			_global.thisY += 110;
			
		} else {
			_global.thisX += 160;
		}
		
	}
}

var mcLoader_mcl:MovieClipLoader = new MovieClipLoader();
var mclListener:Object = new Object();
mclListener.onLoadStart = function() {
};

mclListener.onLoadProgress = function(target_mc, loadedBytes, totalBytes) {
	var pctLoaded:Number = Math.round(loadedBytes/totalBytes*100);

	var preloaderMC = target_mc._parent["preloader"+target_mc.getDepth()+"_mc"];
	preloaderMC.bar_mc._xscale = pctLoaded;
	preloaderMC.progress_txt.text = pctLoaded+"%";
};

mclListener.onLoadInit = function(evt:MovieClip) {
	evt._parent["preloader"+evt.getDepth()+"_mc"].removeMovieClip();
	var thisWidth:Number = evt._width;
	var thisHeight:Number = evt._height;
	var borderWidth:Number = 0;
	var marginWidth:Number = 2;
	evt.scale = 75;
	//disegno rettangolo bianco con bordo nero intorno all'img
	evt.lineStyle(borderWidth, 0x000000, 100);
	evt.beginFill(0xFFFFFF, 100);
	evt.moveTo(-borderWidth-marginWidth, -borderWidth-marginWidth);
	evt.lineTo(thisWidth+borderWidth+marginWidth, -borderWidth-marginWidth);
	evt.lineTo(thisWidth+borderWidth+marginWidth, thisHeight+borderWidth+marginWidth);
	evt.lineTo(-borderWidth-marginWidth, thisHeight+borderWidth+marginWidth);
	evt.lineTo(-borderWidth-marginWidth, -borderWidth-marginWidth);
	evt.endFill();
	
        //scalo l'img e la ruoto
	evt._xscale = evt.scale;
	evt._yscale = evt.scale;
	evt._rotation = Math.round(Math.random()*-6)+3;

        //controllo quando l'img viene premuta	
	
	evt.onRelease = function() {
		if (k==1){
			k++;
			//prendo il numero dell'immagine dal nome x risalire al titolo e descrizione
			var str:String = evt._name;
			var numero:String = str.substring(6);
			var n1:Number = new Number(numero);

			Qui vorrei avere l'array con i titoli e uno con la descrizione in modo
			che riprendo i dati usando come indice n1 

						
			this.origX = this._x;
			this.origY = this._y;
			this.origr = this._rotation;
			this.orig_gall = _parent.gall._y;
			this._xscale = 185;
			this._yscale = 185;
			this._x = 0;
			this._y = 0;
			this._rotation = 0;
			_parent.muovi = 0;
			_parent.gall._y = 0;
			this.swapDepths(this._parent.getNextHighestDepth());
			_parent.rect._alpha=100;
		}else{
			k--;
			this._xscale = this.scale;
			this._yscale = this.scale;
			this._x = this.origX;
			this._y = this.origY;
			this._rotation = this.origr;
			_parent.gall._y = this.orig_gall;
			_parent.muovi = 1;
			_parent.rect._alpha=0;
		}
	};
};
mcLoader_mcl.addListener(mclListener);
Grazie ancora
Marco