Scroller question

Hello:)

I want to make a scroller without arrow buttons, so you can just move your mouse in the direction you want to scroll, upwards or downwards. And I want the scroller to contain lots of mc buttons that increases in size when you get closer to them with your cursor. Just like the dock on the tosh’ez:)

I just don’t quite know how to make that, and any help would be very nice:)

Peace:)