Dimensions of slide show

Question

By some reason after adding of several pictures to a .swf of the same size, in full stage to the slide show, these pictures changes their dimensions when playing the movie and take less place, become not in full stage. Is it possible to make them in full stage in slide show? The code is as below.
var picTotal:Number = 5;
var lightSpeed:Number = 5;
var delay:Number = 5000;
var count:Number = 0;
function init():Void {
var white:MovieClip = this.createEmptyMovieClip("wh", 10);
with (white) {
beginFill(0xFFFFFF);
lineTo(Stage.width, 0);
lineTo(Stage.width, Stage.height);
lineTo(0, Stage.height);
lineTo(0, 0);
endFill();
white.blendMode = "add";
pastePic(_root);
lightSpeed = -lightSpeed;
showNext(white);
function pastePic(target_mc:MovieClip):Void {
target_mc.attachMovie("pic"+count, "pic", 0);
count++;
count %= picTotal;
function showNext(clip:MovieClip):Void {
clearInterval(showNext.intervalID);
clip.onEnterFrame = function():Void  {
this._alpha += lightSpeed;
if (this._alpha<=0) {
delete this.onEnterFrame;
this._alpha = 0;
lightSpeed = -lightSpeed;
showNext.intervalID = setInterval(showNext, delay, clip);
if (this._alpha>=100) {
this._alpha = 100;
lightSpeed = -lightSpeed;
pastePic(_root);
init();

Answer 1

what's the following trace show:
var picTotal:Number = 5;
var lightSpeed:Number = 5;
var delay:Number = 5000;
var count:Number = 0;
function init():Void {
var white:MovieClip = this.createEmptyMovieClip("wh", 10);
with (white) {
beginFill(0xFFFFFF);
lineTo(Stage.width, 0);
lineTo(Stage.width, Stage.height);
lineTo(0, Stage.height);
lineTo(0, 0);
endFill();
white.blendMode = "add";
pastePic(_root);
lightSpeed = -lightSpeed;
showNext(white);
function pastePic(target_mc:MovieClip):Void {
var mc:MovieClip=target_mc.attachMovie("pic"+count, "pic", 0);
trace(mc._width+" "+mc._height);
count++;
count %= picTotal;
function showNext(clip:MovieClip):Void {
clearInterval(showNext.intervalID);
clip.onEnterFrame = function():Void  {
this._alpha += lightSpeed;
if (this._alpha<=0) {
delete this.onEnterFrame;
this._alpha = 0;
lightSpeed = -lightSpeed;
showNext.intervalID = setInterval(showNext, delay, clip);
if (this._alpha>=100) {
this._alpha = 100;
lightSpeed = -lightSpeed;
pastePic(_root);
init();