Please Help

1

How can I make the following code create a picture gird and once its past a certain line the viewer will have to scroll down/up. Here is what I have so far:

var thumb_spacing = 75;


// load variables object to handle loading of text
var textload = new LoadVars();
textload.onData = function(raw_text){
    info_txt.text = raw_text;
}
//Tumbnails
function Generategallery(gallery_xml){
    var galleryPictures = gallery_xml.firstChild.childNodes;
    for (var i = 0; i < galleryPictures.length; i++){
        var currentPicture = galleryPictures*;
        var Thumb = menu_mc.createEmptyMovieClip("thumbnail_mc"+i,i);
        Thumb._y = i * thumb_spacing;
        Thumb.createEmptyMovieClip("thumb_container",0);
        Thumb.thumb_container.loadMovie(currentPicture.attributes.thumb);
        Thumb.title = currentPicture.attributes.title;
        Thumb.image = currentPicture.attributes.image;
        Thumb.description = currentPicture.attributes.description;
        Thumb.onRollOver = Thumb.onDragOver = function(){
            title_txt.text = this.title;
        }
        Thumb.onRollOut = Thumb.onDragOut = function(){
            title_txt.text = "";
        }
        Thumb.onRelease = function(){
            pic.holder.loadMovie(this.image);
            textload.load(this.description);
        }
    }
}

Thanks!!!