What is the timing method and interval that scriptaculous uses in prototype for its smooth tweening? PeriodicalExecuter?
Method: setTimeout(), setInterval()
Interval: Milliseconds
You can also adjust the frame rate that Scriptaculous uses to make animations smoother (results vary by browser and the user's machine speed unfortunately):
fps: Target this many frames per second. Default to 25. Can’t be higher than 100.
Example: new Effect.Fade('myDiv',{fps:60})