     [Bindable("indexInViewChanged")]    
 
     /**
-     *  The index of the first column that's part of the layout and within
-     *  the layout target's scrollRect, or -1 if nothing has been displayed yet.
+     *  The index of the first column that is part of the layout and within
+     *  the layout target's scroll rectangle, or -1 if nothing has been displayed yet.
      * 
      *  Note that the column may only be partially in view.
      * 

     */    
    public function HorizontalLayout():void
    {
		super();
    }
    
    //--------------------------------------------------------------------------

    
    private static function calculatePercentHeight(layoutElement:ILayoutElement, height:Number):Number
    {
        var percentHeight:Number = LayoutElementHelper.pinBetween(Math.round(layoutElement.percentHeight * 0.01 * height),
                                                                  layoutElement.getMinBoundsHeight(),
                                                                  layoutElement.getMaxBoundsHeight() );
        return percentHeight < height ? percentHeight : height;
    }

    private static function sizeLayoutElement(layoutElement:ILayoutElement, height:Number, 
