     *  @playerversion AIR 1.5
     *  @productversion Flex 4
     */
-    protected function viewportResizeHandler(event:ResizeEvent):void
+    mx_internal function viewportResizeHandler(event:ResizeEvent):void
     {
     }
     
    /**
+    *  @private
     *  Called when the viewport's <code>contentWidth</code> value changes. Does nothing by default.
     *  
     *  @langversion 3.0


package spark.components.supportClasses
{
import __AS3__.vec.Vector;

import flash.events.Event;
import flash.events.MouseEvent;
import flash.events.TimerEvent;
import flash.geom.Point;
import flash.utils.Timer;

import mx.events.FlexEvent;
import mx.events.PropertyChangeEvent;
import mx.events.ResizeEvent;

    *  @playerversion AIR 1.5
    *  @productversion Flex 4
    */
    mx_internal function viewportContentWidthChangeHandler(event:PropertyChangeEvent):void
    {
    }
    
    /**
     *  @private 
     *  Called when the viewport's <code>contentHeight</code> value changes. Does nothing by default.
     *  
     *  @langversion 3.0
