static function displayTabContentForItem(CommonGLPI $item, $tabnum = 1, $withtemplate = 0)
 {
     global $CFG_GLPI;
     if ($item->getType() == 'NotificationMailSetting') {
         $target = $CFG_GLPI["root_doc"] . "/plugins/additionalalerts/front/config.form.php";
         self::showFormAlerts($target);
     } else {
         if ($item->getType() == 'Entity') {
             PluginAdditionalalertsInfocomAlert::showNotificationOptions($item);
             PluginAdditionalalertsOcsAlert::showNotificationOptions($item);
         }
     }
     return true;
 }