Hello,
I'm newbie use actionscript. I want to create image gallery, then browsing and found code. After that I applied and working properly.

[condition]
I use two scene (A & B). Scene A, used for information content and the B scene is gallery (with code that i found)
In Scene B, I put create button for back to Scene A

[problem]
Back button is working properly, but the gallery content from Scene B also move into Scene A, and covered information content in Scene A. I dont want this.

[goal]
How to back into Scene A without move the gallery content from Scene B




Code:
import mx.transitions.Tween;
import mx.transitions.easing.*;

var myGalleryXML = new XML();
myGalleryXML.ignoreWhite = true;
myGalleryXML.load("image.xml");

myGalleryXML.onLoad = function() {
	_root.gallery_x = myGalleryXML.firstChild.attributes.gallery_x;
	_root.gallery_y = myGalleryXML.firstChild.attributes.gallery_y;
	_root.gallery_width = myGalleryXML.firstChild.attributes.gallery_width;
	_root.gallery_height = myGalleryXML.firstChild.attributes.gallery_height;

	_root.myImages = myGalleryXML.firstChild.childNodes;
	_root.myImagesTotal = myImages.length;

	_root.thumb_height = myGalleryXML.firstChild.attributes.thumb_height;
	_root.thumb_width = myGalleryXML.firstChild.attributes.thumb_width;

	_root.full_x = myGalleryXML.firstChild.attributes.full_x;
	_root.full_y = myGalleryXML.firstChild.attributes.full_y;

	callThumbs();
	createMask();
	scrolling();

};

function callThumbs() {
	_root.createEmptyMovieClip("container_mc",_root.getNextHighestDepth());
	container_mc._x = _root.gallery_x;
	container_mc._y = _root.gallery_y;

	var clipLoader = new MovieClipLoader();
	var preloader = new Object();
	clipLoader.addListener(preloader);

	for (i=0; i<myImagesTotal; i++) {
		thumbURL = myImages[i].attributes.thumb_url;
		myThumb_mc = container_mc.createEmptyMovieClip(i, container_mc.getNextHighestDepth());
		myThumb_mc._x = _root.thumb_width*i;
		clipLoader.loadClip("img_thumb/menu/"+thumbURL,myThumb_mc);
		
		
		preloader.onLoadStart = function(target) {
			target.createTextField("my_txt",target.getNextHighestDepth(),0,0,100,20);
			target.my_txt.selectable = false;
		};


		preloader.onLoadProgress = function(target, loadedBytes, totalBytes) {
			target.my_txt.text = Math.floor((loadedBytes/totalBytes)*100);
		};

		preloader.onLoadComplete = function(target) {
			new Tween(target, "_alpha", Strong.easeOut, 0, 100, .5, true);
			target.my_txt.removeTextField();
			target.onRelease = function() {
				callFullImage(this._name);
			};

			target.onRollOver = function() {
				this._alpha = 50;
			};

			target.onRollOut = function() {
				this._alpha = 100;
			};


		};
	}
}



function callFullImage(myNumber) {

	myURL = myImages[myNumber].attributes.full_url;
	myTitle = myImages[myNumber].attributes.title;
	_root.createEmptyMovieClip("fullImage_mc",_root.getNextHighestDepth());
	fullImage_mc._x = _root.full_x;
	fullImage_mc._y = _root.full_y;

	var fullClipLoader = new MovieClipLoader();
	var fullPreloader = new Object();
	fullClipLoader.addListener(fullPreloader);

	fullPreloader.onLoadStart = function(target) {
		target.createTextField("my_txt",fullImage_mc.getNextHighestDepth(),0,380,200,20);
		target.my_txt.selectable = false;
	};

	fullPreloader.onLoadProgress = function(target, loadedBytes, totalBytes) {
		target.my_txt.text = Math.floor((loadedBytes/totalBytes)*100);
	};

	fullPreloader.onLoadComplete = function(target) {
		new Tween(target, "_alpha", Strong.easeOut, 0, 100, .5, true);
		target.my_txt.text = myTitle;
	};

	fullClipLoader.loadClip("img_big/menu/"+myURL,fullImage_mc);
	
}

function createMask() {

	_root.createEmptyMovieClip("mask_mc",_root.getNextHighestDepth());

	mask_mc._x = _root.gallery_x;
	mask_mc._y = _root.gallery_y;

	mask_mc.beginFill(0x000000,100);
	mask_mc.lineTo(_root.gallery_width,0);
	mask_mc.lineTo(_root.gallery_width,_root.gallery_height);
	mask_mc.lineTo(0,_root.gallery_height);
	mask_mc.lineTo(0,0);

	container_mc.setMask(mask_mc);

}

function scrolling() {
	_root.onEnterFrame = function() {

		if (mask_mc._xmouse<(mask_mc._width*(1/3)) || mask_mc._xmouse>(mask_mc._width*(2/3))) {
		container_mc._x += Math.cos(((mask_mc._xmouse)/mask_mc._width)*Math.PI)*15;

		if (container_mc._x>mask_mc._x) {
			container_mc._x = mask_mc._x;
		}

		if (container_mc._x<(mask_mc._x-(container_mc._width-mask_mc._width))) {
			container_mc._x = mask_mc._x-(container_mc._width-mask_mc._width);
		}
		}
	};
}
Thank you very much for guidance and suggestion