* event handler for checking and processing user input and
* for defining navigation
CASE event_id.
  WHEN 'bookcust'.
    application->custom = custom.
    application->create_customer( ).
    navigation->goto_page( 'custombook_ok.htm' ) .
  WHEN 'Zurueck'.
    navigation->goto_page( 'login.htm' ) .
  WHEN 'exit'.
    navigation->exit( 'http://www.fh-augsburg.de' ) .
ENDCASE.
