function validateOtherEmails($val, $el)
 {
     $vars = $el->getContainer()->getValue();
     if ($vars['recipient_other'] == 1) {
         if (!strlen($vars['recipient_emails'])) {
             return ___('Please enter one or more email');
         }
         if (!Am_Validate::emails($val)) {
             return ___('Please enter valid e-mail addresses');
         }
     }
 }