Transition  - AS3 Flash

//
// Requires:
//   - MovieClip on the Stage with an instance name of "logo".
//   - Button component on the Stage with an instance name of "button".
//
import fl.transitions.*;
import fl.transitions.easing.*;
 
var blindsObj:Object = {type:Blinds,
                        direction:Transition.IN,
                        duration:4,
                        easing:Strong.easeOut,
                        numStrips:10,
                        dimension:1};
 
button.label = "Play";
button.addEventListener(MouseEvent.CLICK, button_click);
 
function button_click(evt:MouseEvent):void {
    button.enabled = false;
    logo.alpha = 1.0; // 100% (reset alpha)
    var transition:Transition = TransitionManager.start(logo, blindsObj);
    transition.addEventListener("transitionInDone", transition_transitionInDone);
}
 
function transition_transitionInDone(evt:Event):void {
    logo.alpha = 0.5; // 50%
    button.enabled = true;
}