 {
     include "../core/Version.as";
 
-	//--------------------------------------------------------------------------
-	//
-	//  Class constants
-	//
-	//--------------------------------------------------------------------------
+    //--------------------------------------------------------------------------
+    //
+    //  Class constants
+    //
+    //--------------------------------------------------------------------------
 
-	/**
+    /**
      *  The <code>TrackBaseEvent.THUMB_DRAG</code> constant defines the value of the 
      *  <code>type</code> property of the event object for a <code>thumbDrag</code> event. 
      *

     *  @eventType thumbDrag
     *  
     *  @langversion 3.0
     *  @playerversion Flash 9
     *  @playerversion AIR 1.1
     *  @productversion Flex 3
     */
    public static const THUMB_DRAG:String = "thumbDrag";


     *  @eventType thumbRelease
     *  
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 1.5
     *  @productversion Flex 4
     */
    public static const THUMB_RELEASE:String = "thumbRelease";

    //--------------------------------------------------------------------------
    //
    //  Constructor
    //
    //--------------------------------------------------------------------------

    /**
     *  Constructor.
     *
     *  @param type The event type; indicates the action that caused the event.
     *
     *  @param bubbles Specifies whether the event can bubble up the display list hierarchy.
     *
     *  @param cancelable Specifies whether the behavior associated with the event can be prevented.
     *  
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 1.5
     *  @productversion Flex 4
     */
    public function TrackBaseEvent(
                                type:String, bubbles:Boolean = false,
                                cancelable:Boolean = false)
    {
        super(type, bubbles, cancelable);
    }

    //--------------------------------------------------------------------------
    //
    //  Overridden methods: Event
    //
    //--------------------------------------------------------------------------

    /**
     *  @private
     */
    override public function clone():Event
    {
        return new TrackBaseEvent(type, bubbles, cancelable);
