      *  @playerversion AIR 1.5
      *  @productversion Flex 4
      */
-    public var thumb:FxButton;
+    public var thumb:Button;
     
     [SkinPart(required="true")]
     

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

package mx.components.baseClasses
{

import flash.events.Event;

import flash.events.MouseEvent;
import flash.geom.Point;

import spark.components.Button;

/**
 *  Dispatched when the value of the control changes
