Smoothing Tweens and Fades

Hello,
I’m more of and actionscript guy and I’m still a bit of a newbie on the artistic side of flash.

I’m experimenting w/ some tweens and fades. Here’s some quick drafts that I’ve been playing around w/:

http://reseaudesign.com/RLA_SITE/site_ideas.html

I’ve noticed mine always seem to move w/ a choppiness and then I go to
other sites w/ similar tweens and fades and they seem much more smooth.

IE:


Does this have to do w/ Frame rate or is there any other techniques
that work to achieve that type of smoothness?

Thanks,
Clem