Transitions Blinds

Hi

Very much a flash newbie…

i see this effect on a lot of sites. http://www.aricotvert.co.uk/flash/aricot.html
press on a link and watch the roll back to show white and text.

I had a go at doing this with 24 fps and using a shape tween, but it was quite jittery (and this site isn’t!)

Any pointers on how this is done?

Many thakns

Maxelcat