Scripted Animation Strategies

I’m looking for some guidance on scripted animation. I’m more comfortable with timeline animation but see the benefit in speed and performance, in scripted animation. I’d like to apply those fundamentals to a Flash site. But how do you get around timing without a timeline? Do you have to create Timer events for every change?

Say for example, a button opens a section of the site called about us. There are several MovieClip/Sprites that appear from off stage onto the stage via Tweens. Do I encompass all of those tween events in a Timer event or separate timer events.

Then, when I click on another button, all of the about us items must animate off of the stage and the new elements appear in their stead. Of course, this would probably require some conditional statements.

Any suggestions or links would be appreciated.

P.S. Is it common practice to animate everything with scripts instead of timeline animation these days?