CustomScrollableControl.CustomScrollableControl.scroll Function
This is the heart of the custom control. In this method the viewport is incrementally moved from the previous psoition to the current position of the scrollbars. In between showing the incremental moves the methods slpees for a short time to display the image bfore moving to the next poition until the final destination.

Private void scroll (System.Drawing.Point, System.Drawing.Point)
  Type Name Description  
    System.Drawing.Point prevPoint    
    System.Drawing.Point curPoint    
  Return Description  
    void