public ScGridColumn<AcFlightNumber> newOperatorColumnLink(ScCommand c, boolean openNewWindow) {
   ScGridColumn<AcFlightNumber> e;
   e = newOperatorAsTextColumn();
   e.setCell(newOperatorImage(c, openNewWindow));
   e.alignCenter();
   return e;
 }
 public ScGridColumn<AcFlightNumber> newOperatorColumn(Object title, String hint) {
   ScGridColumn<AcFlightNumber> e;
   e = newOperatorAsTextColumn(title);
   e.setCell(newOperatorImage(hint));
   e.alignCenter();
   return e;
 }
 public ScGridColumn<AcFlightNumber> newOperatorColumnLink(
     Object title, String hint, ScCommand c, boolean openNewWindow) {
   ScGridColumn<AcFlightNumber> e;
   e = newOperatorAsTextColumn(title);
   e.setCell(newOperatorImage(hint, c, openNewWindow));
   e.alignCenter();
   return e;
 }