 {
 
 import mx.events.PropertyChangeEvent;
+
 import spark.components.Group;
 import spark.components.ResizeMode;
+import spark.layouts.BasicLayout;
+import spark.layouts.supportClasses.LayoutBase;
 
 //--------------------------------------
 //  Events

    //----------------------------------
    //  viewWidth
    //----------------------------------
    private var _viewWidth:Number;
    
    /**

    //----------------------------------
    //  viewHeight
    //----------------------------------

    private var _viewHeight:Number;
    
    /**
