Here is an example of what you can do if your down arrow picture is 20x70 and is placed at 0,510, your up arrow is 20x70 and is placed at 0,70 and you have all the options as images numbered 1 to 7 which are 70 by 70 (dimensions for a game I'm making - I know it looks weird but its a toolbar at the side. You will have to adapt the sizes and positions for your game). This is probably not the best way of doing it though.
The scrolledup# variable is so that it can tell where all the images are so that you can do links in the same way as the up and down buttons.
Hope I helped.
Am I the only one here who's really confused?