$elem = $driver->find_element('applgs','id' );
    my $white = Selenium::Screenshot->new(
                   png => $driver->screenshot,
                   exclude => [{
                     size     => { width => 10, height => 10 }, #  size      => $elem->get_size,
                     location => { x => 5, y => 5 }, #location  => $elem->get_element_location,
      }]
    );