  *  Dispatched when the thumb is pressed and then moved by the mouse.
  *  This event is always preceded by a <code>thumbPress</code> event.
  * 
- *  @eventType spark.events.TrackBaseEvent
+ *  @eventType spark.events.TrackBaseEvent.THUMB_DRAG
  *  
  *  @langversion 3.0
  *  @playerversion Flash 10

 *  &lt;s:TrackBase
 *    <strong>Styles</strong>
 *    slideDuration="300"
 *
 *    <strong>Events</strong>
 *    change="<i>No default</i>"
 *    changing="<i>No default</i>"

    }
    
    /**
     *  @private
     *  Handles the <code>mouseWheel</code> event when the component is in focus. The thumb is 
     *  moved by the amount of the mouse event delta multiplied by the <code>stepSize</code>.  
     *  
