Vertical scrolling menus


I’ve done a lot of web browsing but as yet have not been able to find the answer to this:

I need to create a vertical scrolling menu. This menu is to look like one long reel of images, where clicking one one image takes the user to a particular place.

The scrolling action I wish to use is this: when the mouse is near the left side of the image reel, it moves left. When it is to the right, it moves right. (ie, on mouseOver - there are no buttons to click).

Which functions should I be using to create this type of menu? Any help would be great.