-////////////////////////////////////////////////////////////////////////////////
+		////////////////////////////////////////////////////////////////////////////////
 //
 //  ADOBE SYSTEMS INCORPORATED
 //  Copyright 2008 Adobe Systems Incorporated

    // make sense to make it public and accessible outside of just the
    // Animation class. For example, effects may want to access the global
    // animation time. Also, we  may want to have child timelines, or expose
    // other capabilities such as speeding up and slowing down time. 
    // Note that the static methods may instead become instance methods
    // on a singleton.
    
    private static var startTime:int = -1;
    private static var _currentTime:int = -1;
    
    public function Timeline()
    {
    }
    
    public static function pulse():int
    {
        if (startTime < 0)

 * This approach means that effects that are set up to end/start at the same
 * time, through use of duration and startDelay properties, will be
 * synchronized.
 *
 *  @langversion 3.0
 *  @playerversion Flash 10
 *  @playerversion AIR 1.5
