como borara los movie clips de mi galeria? ayudaaaaaa

Hola que tal la verdad es que no se practicamnete nada de acton script asi que agradescod eantemano toda la info que he encontrado aca, acutualmente estoy haciendo una galeria para una amiga el problea es que cuando voy a otras escenas la gaeria permanece
este es el codigo:
Stage.scaleMode = "noScale";
fscommand("showmenu", "false");
fscommand("fullscreen", "false");
Stage.align = "TL";
#include "mc_tween2.as"
this.Thumb_mc2._visible=false;
function ridim() {
back._width = Stage.width;
back._height = Stage.height;
mask._width = Stage.width;
mask._height = Stage.height;
}
var sl:Object = new Object();
sl.onResize = function() {
ridim();
};
Stage.addListener(sl);
sl.onResize();
ridim();

//----------------------- Variables Setting ----------------------------
click = false;
lock = false;
var Gallery:XML = new XML();
Gallery.ignoreWhite = true;
var Data:Array = new Array();
var Total:Number = 0;
var PicLoader:MovieClipLoader = new MovieClipLoader();
var BigLoader:MovieClipLoader = new MovieClipLoader();
var thumbListener:Object = new Object();
var bigListener:Object = new Object();
var Loaded:Number = 0;
var Ready:Number = 0;
var Opened:Boolean = false;
loaderBar_mc._alpha = 0;
var workLoadListener:Object = new Object();
//-------------------------------------------------------------------------

//----------------------- Handlers ----------------------------------------
Gallery.onLoad = function(success:Boolean) {
if (!success) {
Gallery.load("lettore.php");
Total = Gallery.firstChild.childNodes.length;
Data = this.firstChild.childNodes;
CreateThumbs();
} else {
Total = Gallery.firstChild.childNodes.length;
Data = this.firstChild.childNodes;
CreateThumbs();
}
};


thumbListener.onLoadStart = function(alvo_mc:MovieClip) {
loaderBar_mc.alphaTo(100,1,"easeOutQuad");
};

thumbListener.onLoadInit = function(my_mc:MovieClip) {
Loaded++;
Larg = my_mc._width;
Altu = my_mc._height;
if (Larg>Altu) {
my_mc._height = 149.4;
my_mc._width = 199.2;
} else {
my_mc._height = 199.2;
my_mc._width = 149.4;
my_mc._rotation = +90;
my_mc._x = my_mc._x+200;
my_mc._parent._rotation = -90;
my_mc.gotoAndStop(2);
}
CreateThumbs(Larg,Altu);
};

thumbListener.onLoadProgress = function(alvo_mc:MovieClip, bytesLoaded:Number, bytesTotal:Number) {
var Percent = bytesLoaded/bytesTotal*100;
loaderBar_mc._xscale = Percent;
};

thumbListener.onLoadComplete = function(alvo_mc:MovieClip) {
posicionaThumb(alvo_mc);
loaderBar_mc.alphaTo(0,1,"easeOutQuad");
};


//-------------------------------------------------------------------------

//----------------------- Functions -----------------------------------------
function CreateThumbs(valx:Number, valy:Number) {
if (Loaded<Total) {
Thumb_mc2.duplicateMovieClip("Thumb"+Loaded+"_mc",Loaded);
//Moving to a random position
//this["Thumb"+Loaded+"_mc"]._x = random(1500)*-1;
//this["Thumb"+Loaded+"_mc"]._y = random(1500)*-1;
this["Thumb"+Loaded+"_mc"].recebe_mc.colorTo(0xffffff)
this["Thumb"+Loaded+"_mc"].scaleTo(100)
carregaEsseThumb(this["Thumb"+Loaded+"_mc"]);
}
}


function carregaEsseThumb(Aonde:MovieClip) {
Aonde.pqn = Data[Loaded].attributes.pqn;
Aonde.gde = Data[Loaded].attributes.gde;
Aonde.form = Data[Loaded].attributes.form;
Aonde.legenda = Data[Loaded].attributes.legenda;
PicLoader.loadClip(Aonde.gde,Aonde.recebe_mc);
Aonde.recebe_mc.scaleTo(41.5);
}
function posicionaThumb(Qual:MovieClip) {
//Qual._parent.tween(["_x", "_y", "_rotation"],[randRange(200, 480), randRange(100, 300), random(360)],2,"easeOutQuad");
Qual._parent.recebe_mc.colorTo(null,3,"easeOutQuad")
/*Qual._parent.onRollOver = function() {
if (!Opened) {
desombraMe(this);
}
};*/
Qual._parent.onPress = function() {
if (!Opened) {
this.modo = 1;
this.modo_time = 1;
//this.swapDepths(Total);
//Qual._parent.startDrag();
this.scaleTo(130,0.04,"easeOutQuad");
sombraMe(this);
}
//if this is the first click
if (!_root.click) {
timer = getTimer()/1000;
_root.click = true;
} else {
timer2 = getTimer()/1000;
//if it is a double click
if ((timer2-timer)<.25) {
Qual._parent.stopDrag();
if (!Opened) {
Abre(this);
_root.mask.visible = true;
_root.mask._alpha = 45;
_root.mask.swapDepths(_root.getNextHighestDepth());
Opened = true;
} else if (Opened) {
fecha(this);
_global.locked = 0;
Opened = false;
desombraMe(this);
_root.mask._alpha = 0;
_root.mask.swapDepths(0);
_root.click = false;
}
} else {
timer = getTimer()/1000;
_root.click = true;
}
}
};
Qual._parent.onRelease = function() {
this.modo = 2;
this.modo_time = 2;
Qual._parent.stopDrag();
angle = getProperty(Qual._parent, _rotation);
if (!Opened) {
Qual._parent.scaleTo(100,0.1,"easeOutQuad");
desombraMe(this);
//Qual._parent.tween(["_rotation"], [angle+randRange(-5,5)], 0.5, "easeOutQuad");
}
};
Qual._parent.onReleaseOutside = function() {
this.modo = 2;
this.modo_time = 2;
if (!Opened) {
Qual._parent.scaleTo(100,0.1,"easeOutQuad");
desombraMe(this);
}
};
Qual._parent.onRollOut = function() {
/*this.modo=2;
this.modo_time=2;*/

if (!Opened) {
Qual._parent.scaleTo(100,0.1,"easeOutQuad");
desombraMe(this);
}
};


}
function randRange(min:Number, max:Number):Number {
var randomNum:Number = Math.floor(Math.random()*(max-min+1))+min;
return randomNum;
}
onEnterFrame = function () {

};
function sombraMe(Movie:MovieClip) {
Movie.alphaTo(100,0.002,"easeOutQuad",0.002,swapa);
////
}
function desombraMe(Movie:MovieClip) {
Movie.thumb.frameTo(1,0.5,"easeOutQuad");
}
//
function swapa() {
this.alphaTo(100,0.0002,"easeOutQuad");
this.swapDepths(_root.getNextHighestDepth());
this.thumb.frameTo(15,0.005,"easeOutQuad");
}
//
function Abre(Qual) {
if (!Opened) {
Qual.scaleTo(240,0.5,"easeOutQuad");
rotazion = Qual.recebe_mc._rotation;
_global.locked = 1;
Qual.tween(["_x", "_y", "_rotation"],[(Stage.width/2), (Stage.height/2), -rotazion],0.5,"easeOutQuad",0);
}
}
//
function fecha(Qual:MovieClip) {
fechaFoto();
Qual.scaleTo(100,3,"easeOutElastic");
//Qual.tween(["_x", "_y", "_rotation"],[random(780), random(400), random(360)],0.5,"easeOutQuad");
_global.locked = 0;
}
//

function fechaFoto() {
fotoGrande_mc.mascara_mc._yscale = 0;
fotoGrande_mc._x = 50000;
fotoGrande_mc._y = 50000;
}

function fetchaAll() {
for (i=0; i<Total; i++) {
this["Thumb"+i+"_mc"].tween(["_rotation"],[random(360)],0.5,"easeInOutBack");
this["Thumb"+i+"_mc"].tween(["_x", "_y"],[Stage.width-1470, Stage.height+300],2,"easeOutQuad");
}
}
//-------------------------------------------------------------------------
//----------------------- Start Here --------------------------------------
//Loading XML archive
Gallery.load("fotos.xml");
//Setting listner for Class MovieClip Loader
PicLoader.addListener(thumbListener);
//Setting other Listner for other classes Mcl
BigLoader.addListener(bigListener);
//Stopping
stop();

podrian decirme que codigo puedo poner para que cuando valla aotro frame no aparecsca ala galeroa se los agradeceroa mucho.

Hola, incropora esta funcion:

Código ActionScript :

function borrar_galeria()
{
   for(var i in this) if( this[i] instanceof MovieClip ) this[i].removeMovieClip();
}

Ejecutala antes de cambiar de escena, si no se borran todos los objetos, crea un fotograma vacio y ejecuta un gotoAndStop() hacia el numero del fotograma y luego cambia de escena. Suerte.