/**
  * remove_grade_caps( $user_id )
  *
  * Adds grade capabilities to new $user_id
  *
  * @param Int $user_id ID of the user capabilities to be removed from
  */
 function remove_grade_caps($user_id)
 {
     //Treat super admins
     if (is_super_admin($user_id)) {
         return;
     }
     $user = new nxt_User($user_id);
     foreach ($this->caps as $c) {
         if ($user->has_cap($c)) {
             $user->remove_cap($c);
         }
     }
 }
 function update_membershipadmin_capability($user_id)
 {
     $user = new nxt_User($user_id);
     if (!empty($_POST['membershipadmin']) && $_POST['membershipadmin'] == 'yes') {
         $user->add_cap('membershipadmin');
     } else {
         $user->remove_cap('membershipadmin');
     }
 }