A callback method for the vertical scrolling of the visible data.
<oBrowser>:VerticalScroll(<oScrollEvent>) Æ iResult
|<oScrollEvent>||A event that contains information about the scrolling.|
|iResult||The result of the event processing. By return of ISEXECUTED Micosoft Windows is notified that the event was completely processed. In this case the event is not passed on at the standard event handler.|
bBrowser:VerticalScroll() scrolls the visible data in vertical direction and fills the invalid area with new data. Additionally the vertical scrollbar is updated.