     
     private function isValidScaleGrid():Boolean
     {
-    	return !isNaN(scaleGridLeft) &&
-        	   !isNaN(scaleGridTop) &&
-        	   !isNaN(scaleGridRight) &&
-        	   !isNaN(scaleGridBottom);
+        return !isNaN(scaleGridLeft) &&
+               !isNaN(scaleGridTop) &&
+               !isNaN(scaleGridRight) &&
+               !isNaN(scaleGridBottom);
     }
     
     //--------------------------------------------------------------------------

    [Inspectable(category="General")]
    
    /**
     * Specfies the top coordinate of the scale grid.
     *  
     *  @langversion 3.0
     *  @playerversion Flash 10

     *  @private
     */
    override public function set scale9Grid(value:Rectangle):void
    {
        if (value != null)
        {
            scaleGridTop = value.top;
            scaleGridBottom = value.bottom;
            scaleGridLeft = value.left;
            scaleGridRight = value.right;
        }
        else
        {
            scaleGridTop = NaN;
            scaleGridBottom = NaN;
            scaleGridLeft = NaN;
            scaleGridRight = NaN;
        }
    }

    //----------------------------------
    //  scaleGridBottom
