Looping The XML Flash Gallery

programming flash
1

In reference to this tutorial: http://www.kirupa.com/developer/mx2004/xml_flash_photogallery.htm

I would like to make the Gallery loop from the last photo to the first photo (when pressing the Next button while viewing the last image). Additionally, make the first photo loop to the last photo (when pressing the Previous button while viewing the first image).

Any suggestions to keeping this Gallery in a continous loop regardless of which button (Previous or Next) the viewer pushes?

Here’s my code so far:

function loadXML(loaded) {
    if (loaded) {
        xmlNode = this.firstChild;
        image = [];
        heading = [];
        description = [];
        total = xmlNode.childNodes.length;
        for (i=0; i<total; i++) {
            image* = xmlNode.childNodes*.childNodes[0].firstChild.nodeValue;
            heading* = xmlNode.childNodes*.childNodes[1].firstChild.nodeValue;
            description* = xmlNode.childNodes*.childNodes[2].firstChild.nodeValue;
        }
        firstImage();
    } else {
        content = "File not loaded! Please check the paths of your XML file.";
    }
}
xmlData = new XML();
xmlData.ignoreWhite = true;
xmlData.onLoad = loadXML;
// Reference the location of your XML file here
xmlData.load("images.xml");
/////////////////////////////////////
listen = new Object();
listen.onKeyDown = function() {
    if (Key.getCode() == Key.LEFT) {
        prevImage();
    } else if (Key.getCode() == Key.RIGHT) {
        nextImage();
    }
};
Key.addListener(listen);
previous.onRelease = function() {
    prevImage();
};
next.onRelease = function() {
    nextImage();
};
/////////////////////////////////////
p = 0;

this.onEnterFrame = function() {
    filesize = picture.getBytesTotal();
    loaded = picture.getBytesLoaded();
    preloader._visible = true;
    if (loaded != filesize) {
        preloader.preload_bar._xscale = 100 * loaded/filesize;
    } else {
        preloader._visible = false;
        if (picture._alpha<100) {
            picture._alpha += 10;
        }
    }
};
function nextImage() {
    if (p<(total-1)) {
        p++;
        if (loaded == filesize) {
            picture._alpha = 0;
            picture.loadMovie(image[p], 1);
            title_txt.text = heading[p];
            desc_txt.text = description[p];
            picture_num();
        }
    }
}
function prevImage() {
    if (p>0) {
        p--;
        picture._alpha = 0;
        picture.loadMovie(image[p], 1);
        title_txt.text = heading[p];
        desc_txt.text = description[p];
        picture_num();
    }
}
function firstImage() {
    if (loaded == filesize) {
        picture._alpha = 0;
        picture.loadMovie(image[0], 1);
        title_txt.text = heading[p];
        desc_txt.text = description[0];
        picture_num();
    }
}
function picture_num() {
    current_pos = p+1;
    pos_txt.text = current_pos+" / "+total;
}
//////////////////////////////////
_root.setMask(msk);
//////////////////////////////////
/* NEXT and PREV BUTTON MOVEMENT is set with variables on the movie clips themselves. Single click each button for their action script*/

Thanks for the help.