      */ 
     mx_internal function stage_orientationChangeHandler(event:StageOrientationEvent):void
     {
-		disableNextControlAnimation = true;
+        disableNextControlAnimation = true;
         invalidateSkinState();
     }
     

    private var _active:Boolean = true;
    
    /**
     *  Flag indicating whether the navigator is active.  The parent navigator
     *  will automatically set this flag to true or false as its state changes.
     *  
     *  @default true
     * 
     *  @langversion 3.0
     *  @playerversion Flash 10.1
     *  @playerversion AIR 2.5
     *  @productversion Flex 4.5
     */

    //  navigationStack
    //----------------------------------
    
    /**
     *  @private
     */ 
    protected var _navigationStack:NavigationStack;
    
    /**
