 import flash.events.MouseEvent;
 import flash.geom.Point;
 
-import mx.components.FxButton;
+import spark.components.Button;
 
 /**
  *  Dispatched when the value of the control changes

[SkinState("disabled")]

/**
 *  The FxTrackBase class is a base class for components with a track
 *  and one or more thumb buttons, such as FxSlider and FxScrollBar. It
 *  declares two required skin parts: <code>thumb</code> and
 *  <code>track</code>. 
 *  The FxTrackBase class also provides the code for
 *  dragging the thumb button, which is shared by the FxSlider and FxScrollBar classes.
 * 
 *  @see mx.components.baseClasses.FxSlider
 *  @see mx.components.baseClasses.FxScrollBar
 *  
 *  @langversion 3.0
 *  @playerversion Flash 10
 *  @playerversion AIR 1.5
 *  @productversion Flex 4
 */
public class FxTrackBase extends FxRange
{
    include "../../core/Version.as";


//
////////////////////////////////////////////////////////////////////////////////

package spark.components.supportClasses
{

import flash.events.Event;
