Xml images alignment in flash..

Question

hi frndz....
i want to align the thumb images bottom to top. but not top to bottom.
my problem is that when i upload a small thmub image, it start from top to bottom,,, but i want this start form bottom to top.
function minithumbs()
_root.createEmptyMovieClip("wall",_root.getNextHighestDepth());
    wall._x = _root.gallery_x;
    wall._y = _root.gallery_y;
    wall.addEventListener(MouseEvent.CLICK);
    var clipLoader = new MovieClipLoader();
    var preloader = new Object();
    clipLoader.addListener(preloader);
        for (i =0; i <10; 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 = -3100;
        clipLoader.loadClip("shop/" + thumbURL,myThumb_mc);

Answer 1

its not align the image,,  i want that when i upload a small images (200 X 300) , its start from top to bottm, but my requir is its start from bottom to top.,,,
its also not working,,
_root.myThumb_mc._y  = Stage.height/2 - _root.myThumb_mc._height/2;