Mouse scroll navigation and preloader problems

Hey, I got couple questions that I have been trying to find out with no luck, (seen a lot of tutorials :rolleyes:).

I am trying to make a site using mouse scroll, moving mouse to left or right and ‘frontpages’ would move accordingly (new frontpages would come out from sides of the the screen if any. Otherwise it would stop to the last one. I don’t want it scroll to infinity).

The navigation would work using large ‘buttons’ as a frontpages to the content behind them. The content would open by clicking ’frontpage’ and sliding contents (2) from underneath the ‘frontpage’ while doing that other ‘frontpages’ would move to the right. Closing would work by clicking the content and it would slide back in, closing the gap.

How can this be done? I have found tutorials that do the mouse scroll with jquery or smt. But what about as3? And how to do the contents sliding in and out?

The other problem that I have is coding preloader that makes something happen when code has calculated that ie. 10% has been loaded and yellow light would come on, 20% some other light and so on. I was thinking that if I would make a movieclip and it would have animation per 10%, but how can I start those when needed?

Any ideas?
I’m lost with these, got everything else done for the site.