case timezoneSetting: {
        UIViewController *pickerViewController = (setting.type == timeSetting) ?
                [[[TimePickerViewController alloc] initWithSetting:setting] autorelease] :
                [[[TimeZonePickerViewController alloc] initWithSetting:setting] autorelease];

        if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
            CGRect frame = [self.tableView rectForRowAtIndexPath:indexPath];
            CGRect cellRect = CGRectMake(frame.origin.x, frame.origin.y - tableView.contentOffset.y, frame.size.width, frame.size.height);

            [pickerPopover setContentViewController:[[[UINavigationController alloc] initWithRootViewController:pickerViewController] autorelease]];
            [pickerPopover presentPopoverFromRect:cellRect inView:self.view permittedArrowDirections:(UIPopoverArrowDirectionRight | UIPopoverArrowDirectionUp) animated:YES];
        }
        else {
            [self.navigationController pushViewController:pickerViewController animated:YES];
        }

        break;
    }