Help me find the problem.. Please!

I’ve downloaded and edited the FLA from http://www.lukamaras.com/tutorials/actionscript/ultimate-dynamic-image-gallery.html
to show my images and data from a mysql database.

The images loads and appears 4 per row.
When the 5:th image loads it should appear under image no 1, but it appears on a new row after the 4th image… making any sense?!

Please check the code, where should I change something?
At function loadThumbnail() probably?!

Thanks in advance!!


/* -------------------- setting the variables -------------------- */
var menuSpeed:Number = 6;
var menuDown:Button = menuDown_btn;
var menuUp:Button = menuUp_btn;
menuUp._alpha = 0;
menuUp.enabled = false;
var firstLook:Boolean = true;
var menuButtons:MovieClip = galleryMenu_mc.buttonsHolder_mc;
var galleryMask:MovieClip = galleryMenu_mc.galleryMask_mc;
galleryMask._height = 391;
var imagesHolder:MovieClip = imagesHolder_mc;
var descText:TextField = desc_txt;
var imagesInGallery:Array = new Array();
var galleryNames:Array = new Array();
var galleryIntros:Array = new Array();
var descriptions:Array = new Array();
var tracker:Number = new Number();
var whatIsLoading:String = new String();
var galleryBtnLeftMargin:Number = 10;
var galleryBtnUpperMargin:Number = 60;
var galleryBtnVSpace:Number = 23;
var thumbMarginX:Number = 116;
var thumbMarginY:Number = 83;
/* -------------------- Aligning and positioning imagesHolder_mc, the logo and the description text field -------------------- */
imagesHolder._x = 243;
imagesHolder._y = galleryBtnUpperMargin;
//logo_mc._x = logo_mc._y=galleryBtnLeftMargin;
desc_txt._x = 243;
desc_txt._y = 400;
/* -------------------- The welcome text -------------------- */
descText.text = "Click on a gallery name on the left to load its thumbnails. Remember, you can click on a thumbnail only when all the thumbnails in a gallery have been loaded. When you click on a thumbnail to see the big image, clicking on the big image will close it and you will return to the gallery. Use the button(s) above the galleries to scroll through them.";
/* -------------------- Importing and defining the DropShadow filter -------------------- */
import flash.filters.DropShadowFilter;
var shadowEffect:DropShadowFilter = new DropShadowFilter(3, 45, 0x000000, 100, 3, 3, 1, 3);
var thumbsFilter:Array = [shadowEffect];
/* -------------------- MovieClipLoader & Listener -------------------- */
var loader:MovieClipLoader = new MovieClipLoader();
var myListener:Object = new Object();
loader.addListener(myListener);
myListener.onLoadInit = function(target:MovieClip) {
    if (whatIsLoading == "thumb") {
        currentThumbnail.percent_txt._visible = false;
        currentThumbnail.filters = thumbsFilter;
        thumbClickable();
        tracker++;
        if (tracker<howManyImages) {
            loadThumbnail();
        } else {
            enableThumbs();
        }
    } else if (whatIsLoading == "big") {
        target._alpha = 0;
        displayBigImage.percent_txt._visible = false;
        displayBigImage.filters = thumbsFilter;
        bigClickable();
        fadeIn();
    }
};
myListener.onLoadProgress = function(target:MovieClip, loaded:Number, total:Number) {
    percent = Math.floor(loaded/total*100);
    if (whatIsLoading == "thumb") {
        currentThumbnail.percent_txt._visible = true;
        currentThumbnail.percent_txt.text = percent+"%";
    } else if (whatIsLoading == "big") {
        displayBigImage.percent_txt._visible = true;
        displayBigImage.percent_txt.text = percent+"%";
    }
};
/* -------------------- loading XML -------------------- */
var imageGallery:XML = new XML();
imageGallery.ignoreWhite = true;
imageGallery.onLoad = function(success) {
    if (success) {
        parseGalleries();
    } else {
        descText.text = "Sorry the image data just didn't load.";
    }
};
imageGallery.load("gallery/collections.php");
//imageGallery.load("gallery/gallery.xml");
/* -------------------- parsing XML -------------------- */
function parseGalleries():Void {
    if (imageGallery.firstChild.nodeName == "galleries") {
        var rootNode:XMLNode = imageGallery.firstChild;
        for (i=0; i<rootNode.childNodes.length; i++) {
            if (rootNode.childNodes*.nodeName == "gallery") {
                currentGallery = rootNode.childNodes*;
                imagesInGallery.push(currentGallery.childNodes.length);
                galleryNames.push(currentGallery.attributes.title);
                galleryIntros.push(currentGallery.attributes.intro);
                currentGalleryTitle = rootNode.childNodes*.attributes.title;
                currentGalleryButton = galleryMenu_mc.buttonsHolder_mc.attachMovie("gallery section button", "galleryButton"+i, galleryMenu_mc.buttonsHolder_mc.getNextHighestDepth());
                currentGalleryButton._x = 0;
                currentGalleryButton._y = galleryBtnVSpace*i;
                currentGalleryButton.sectionTitle_txt.text = "0"+(i+1)+" "+currentGalleryTitle.toUpperCase();
                for (j=0; j<currentGallery.childNodes.length; j++) {
                    if (currentGallery.childNodes[j].nodeName == "image") {
                        currentDescription = currentGallery.childNodes[j].firstChild.toString();
                        descriptions.push(currentDescription);
                    }
                }
            }
        }
    }
    numberOfGalleries = i;
    enableButtons(numberOfGalleries);
}
function enableButtons(numberOfGalleries:Number):Void {
    for (i=0; i<numberOfGalleries; i++) {
        pressedButton = galleryMenu_mc.buttonsHolder_mc["galleryButton"+i];
        pressedButton.onRollOver = function():Void  {
            this.gotoAndStop(2);
        };
        pressedButton.onRollOut = function():Void  {
            this.gotoAndStop(1);
        };
        pressedButton.onPress = function():Void  {
            removeMovieClip(thumbsDisplayer);
            removeMovieClip(displayBigImage);
            tracker = 0;
            thumbsDisplayer = imagesHolder.createEmptyMovieClip("thumbsDisplayer_mc", imagesHolder.getNextHighestDepth());
            clickedGallery = Number(this._name.substr(13));
            howManyImages = imagesInGallery[clickedGallery];
            whichGallery = galleryNames[clickedGallery];
            descText.text = galleryIntros[clickedGallery];
            currentRow = 0;
            currentColumn = 0;
            loadThumbnail();
        };
    }
    enableGalleryNavigation();
}
function loadThumbnail() {
    currentThumbnail = thumbsDisplayer.attachMovie("thumbnail holder", "thumbnail"+(tracker+1), thumbsDisplayer.getNextHighestDepth());
    target = currentThumbnail.thumbImage_mc;
    if ((tracker%4) == 0 && tracker != 0) {
        currentRow += 1;
    }
    if (currentColumn>3) {
        currentColumn = 0;
    } else if (tracker == 0) {
        currentColumn = 0;
    } else {
        currentColumn += 1;
    }
    currentThumbnail._x = currentColumn*thumbMarginX;
    currentThumbnail._y = currentRow*thumbMarginY;
    currentThumbnail.percent_txt._visible = true;
    thumbNumber = currentThumbnail._name.substr(9);
    thumbPath = "gallery/"+whichGallery+"/thumbs/"+thumbNumber+".jpg";
    whatIsLoading = "thumb";
    loader.loadClip(thumbPath, target);
}
function thumbClickable():Void {
    currentThumbnail.onPress = function() {
        bigNumber = this._name.substr(9);
        displayBigImage = imagesHolder.attachMovie("big image holder", "bigImage_mc", imagesHolder.getNextHighestDepth());
        target = displayBigImage.imageHolder_mc;
        bigImagePath = "gallery/"+whichGallery+"/"+bigNumber+".jpg";
        whatIsLoading = "big";
        disableThumbs();
        loader.loadClip(bigImagePath, target);
        if (clickedGallery>0) {
            var descPosition:Number = 0;
            for (i=0; i<clickedGallery; i++) {
                descPosition += imagesInGallery*;
            }
            descPosition = descPosition+Number(bigNumber)-1;
            imageDesc = descriptions[descPosition];
        } else {
            imageDesc = descriptions[Number(bigNumber)-1];
        }
        descText.text = imageDesc;
    };
    currentThumbnail.enabled = false;
}
function disableThumbs():Void {
    for (i=0; i<howManyImages; i++) {
        thumbsDisplayer["thumbnail"+(i+1)].enabled = false;
    }
}
function enableThumbs():Void {
    for (i=0; i<howManyImages; i++) {
        thumbsDisplayer["thumbnail"+(i+1)].enabled = true;
    }
}
function bigClickable():Void {
    displayBigImage.onPress = function() {
        removeMovieClip(this);
        enableThumbs();
        descText.text = galleryIntros[clickedGallery];
    };
}
function fadeIn():Void {
    target.onEnterFrame = function():Void  {
        this._alpha += 10;
        if (this._alpha>=100) {
            delete this.onEnterFrame;
            this._alpha = 100;
        }
    };
}
function enableGalleryNavigation():Void {
    menuDown.onPress = function() {
        if (firstLook) {
            menuUp._alpha = 100;
            menuUp.enabled = true;
            firstLook = false;
        }
        var menuTop:Number = menuButtons._height-Math.abs(menuButtons._y);
        if (menuButtons._y<=0 && menuTop>=galleryMask._height) {
            var targetPos:Number = menuButtons._y-galleryMask._height;
            menuDown.enabled = false;
            menuUp.enabled = false;
            menuButtons.onEnterFrame = function():Void  {
                menuButtons._y += (targetPos-menuButtons._y)/menuSpeed;
                if (menuButtons._y<=(targetPos+0.8)) {
                    menuButtons._y = Math.round(targetPos);
                    delete menuButtons.onEnterFrame;
                    menuDown.enabled = true;
                    menuUp.enabled = true;
                }
            };
        }
    };
    menuUp.onPress = function() {
        var menuTop:Number = menuButtons._height-Math.abs(menuButtons._y);
        if (menuButtons._y<0 && menuTop>0) {
            var targetPos:Number = menuButtons._y+galleryMask._height;
            menuDown.enabled = false;
            menuUp.enabled = false;
            menuButtons.onEnterFrame = function():Void  {
                menuButtons._y += (-menuButtons._y+targetPos)/menuSpeed;
                if (menuButtons._y>=(targetPos-0.8)) {
                    menuButtons._y = Math.round(targetPos);
                    delete menuButtons.onEnterFrame;
                    menuDown.enabled = true;
                    menuUp.enabled = true;
                }
            };
        }
    };
}