Infinite Scroller

I need help with the Infinate scroller I think it’s called. There is a tutorial on it on this website. I’m not very good at flash so my question might sound a bit stupid, but I wanted to know how to make the scroller stop scrolling when the mouse stops hovering over it and make it only scroll at one speed. Similar to this scroller
Thanks to anybody who can help.
By the way, I was wondering if anybody knows where the best site’s for components are, and for pixel art?
Thank you.

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