The Piecemaker usest he mighty Tweener engine from Caurina, which makes it support plenty of tween types for the transitions, such as Cubic, Bounce or Elastic. Beside the transition type you can also customize tweening time, tweening delay as well as the movement of the cubes while tweening in terms of position on the z axis and positions to each other. With this you can make the cubes move towards the screen or away from it and let the whole gallery expand while tweening.

http://blogfreakz.com/freebie/flash-image-slider/