 import spark.layouts.supportClasses.LayoutBase;
 import spark.layouts.supportClasses.LayoutElementHelper;
 import spark.layouts.supportClasses.LinearLayoutVector;
+
+use namespace mx_internal;
 
 /**
  *  The VerticalLayout class arranges the layout elements in a vertical sequence,

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

import mx.containers.utilityClasses.Flex;
import mx.core.ILayoutElement;
import mx.core.IVisualElement;
import mx.core.mx_internal;
import mx.events.PropertyChangeEvent;

import spark.components.supportClasses.GroupBase;
