+global $is_logged_in;
+if (!$is_logged_in) {
+ echo "Please login first. <br>";
+ $_SESSION['login_referer'] = $_SERVER['HTTP_REFERER'];
+ redirect("index.php?page=login", 2);
+}
+
+if (isset($form_cancel) && isset($form_flight_id) && isset($form_class_name) &&
+ $is_logged_in) {