  *  @playerversion AIR 1.5
  *  @productversion Flex 4
  */
-public class VScrollBar extends ScrollBar
+public class VScrollBar extends ScrollBarBase
 {
     include "../core/Version.as";
 

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

        var oldStepSize:Number;
        if (viewport)
        {
            // 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.
