  	   	var layoutTarget:Group = target;
     	if (layoutTarget != null) 
     	{
-			gapChanged = true;
         	layoutTarget.invalidateSize();
             layoutTarget.invalidateDisplayList();
     	}

    //  rowHeight
    //----------------------------------
    
    /**
     *  @private
     */
    private var _rowHeight:Number = 20;
    
    /**
     *  @private
     */
    private var rowHeightChanged:Boolean = false;

    [Inspectable(category="General")]

    /**
     *  The height of the rows in pixels.
     *  Unless the <code>variableRowHeight</code> property is
     *  <code>true</code>, all rows are the same height.  
     */
    public function get rowHeight():Number
    {

 		   	var layoutTarget:Group = target;
        	if (layoutTarget != null) 
        	{
            	layoutTarget.invalidateSize();
	            layoutTarget.invalidateDisplayList();
        	}
