         var oldStepSize:Number;
         if (viewport)
         {
-            // Want to use ScrollBar's changeValueByStep() implementation to get the same
+            // Want to use ScrollBarBase's changeValueByStep() implementation to get the same
             // animated behavior for scrollbars with and without viewports.
             // For now, just change pageSize temporarily and call the superclass
             // implementation.

     *  @param increase Whether the page scroll is up (<code>true</code>) or
     *  down (<code>false</code>). 
     * 
     *  @see spark.components.supportClasses.ScrollBar#changeValueByPage()
     *  @see spark.components.supportClasses.Range#setValue()
     *  @see spark.core.IViewport
     *  @see spark.core.IViewport#verticalScrollPosition

[DefaultTriggerEvent("change")]

/**
 *  The VScrollBar (vertical scrollbar) control lets you control
 *  the portion of data that is displayed when there is too much data
 *  to fit vertically in a display area.
 * 
