I want to space between thumb... which is calling by "gallery.xml"

Question

function callThumbs() {           
    _root.createEmptyMovieClip("wall",_root.getNextHighestDepth());
    wall._x = _root.gallery_x= 0;
    wall._y = _root.gallery_y= 340;
wall.addEventListener(MouseEvent.CLICK);
    var clipLoader = new MovieClipLoader();
    var preloader = new Object();
    clipLoader.addListener(preloader);
    for (i=0; i<15; i++) {
        thumbURL = myImages[i].attributes.thumb_url;
        myThumb_mc = wall.createEmptyMovieClip(i, wall.getNextHighestDepth());
        myThumb_mc._x = _root.thumb_height*i;
        myThumb_mc._x = _root.thumb_position=-2000;
        clipLoader.loadClip("thumbs/"+thumbURL,myThumb_mc);
        preloader.onLoadStart = function(target) {
            target.createTextField("my_txt",target.getNextHighestDepth(),0,0,10,1 0);
            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 = 100;
            target.onRollOut = function() {
                this._alpha = 100;

Answer 1

use:
var gapX:Number=5;
var nextX:Number = 0;
var loadNum:Number=0;
var preloader:Object={};
var clipLoader:MovieClipLoader=new MovieClipLoader();
clipLoader.addListener(preloader);
function callThumbs() {           
    _root.createEmptyMovieClip("wall",_root.getNextHighestDepth());
    wall._x = _root.gallery_x= 0;
    wall._y = _root.gallery_y= 340;
//wall.addEventListener(MouseEvent.CLICK);
    //var clipLoader = new MovieClipLoader();
    //var preloader = new Object();
    //clipLoader.addListener(preloader);
loadnextF();
function loadnextF(){
    thumbURL = myImages[loadNum].attributes.thumb_url;
        myThumb_mc = wall.createEmptyMovieClip(loadNum, wall.getNextHighestDepth())
myThumb_mc._alpha=0;
        clipLoader.loadClip("thumbs/"+thumbURL,myThumb_mc);
        preloader.onLoadStart = function(target) {
            target.createTextField("my_txt",target.getNextHighestDepth(),0,0,10,1 0);
            target.my_txt.selectable = false;
        preloader.onLoadProgress = function(target, loadedBytes, totalBytes) {
            target.my_txt.text = Math.floor((loadedBytes/totalBytes)*100);
        preloader.onLoadComplete = function(target) {
target._x = nextX;
nextX += target._width+gapX;
loadNum++;
if(loadNum<15){
loadnextF();
} else {
// all images loaded.  do whatever.
            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 = 100;
            target.onRollOut = function() {
                this._alpha = 100;