node admin submit

function node_admin_nodes_submit($form_id, $edit) {  $operations = node_operations();  if ($operations[$edit['operation']][1]) {    // Flag changes    $operation = $operations[$edit['operation']][1];    foreach ($edit['nodes'] as $nid => $value) {      if ($value) {        db_query($operation, $nid);      }    }    drupal_set_message(t('The update has been performed.'));  }}