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

     *  @playerversion AIR 1.5
     *  @productversion Flex 4
     */
    public var track:FxButton; 

    //--------------------------------------------------------------------------
    //


    //--------------------------------------------------------------------------
    //
    //  Overridden properties: UIComponent, Range
    //
    //--------------------------------------------------------------------------
 
