Someone please help me with this vertical scroll issue

programming flash
1

I’m using Kirupa’s thumbnail tute (http://www.kirupa.com/developer/mx2004/thumbnails3.htm) and want to modify it so that the thumbnails scroll vertically instead of horizontally.

I’ve got everything changed except the one last CRUCIAL part: the vertical scrolling.

Here is where I’ve gotten so far:
http://208.131.133.122/gallery/thumbnails.html

The 1.2 MB Flash and xml zipped file can be downloaded from here: http://208.131.133.122/gallery/thumbnails.zip.

ALL help would be much appreciated.

Thanks