function makeMenuLink(&$contactList, &$nav)
 {
     if (!is_a($contactList, 'GroupContactList') || $contactList->group == '') {
         return;
     }
     $epp = $contactList->entriesPerPage;
     $start = $contactList->start;
     $contactList->setEntriesPerPage(0);
     $contactList->setStartString('');
     $c = $contactList->getContacts();
     $contactList->setEntriesPerPage($epp);
     $contactList->setStartString($start);
     $allEmails = '';
     foreach ($c as $cont) {
         $eml = $cont->getValueGroup('email');
         if (count($eml) > 0) {
             $allEmails .= StringHelper::obscureString($cont->contact['lastname'] . ' ' . $cont->contact['firstname'] . ' <' . $eml[0]['value'] . '>,');
         }
     }
     $nav->addEntry('plugin.Mailto', 'mailto', 'mailto:' . $allEmails);
 }
 /**
  * generate a HTML link to send an email. Takes care of obscuring.
  * @static
  * @param string|array list of emails
  * @param string $text text between <a> and </a>
  * @return string <a href="mailto:-emails-"> $text </a>
  */
 function sendEmailLink($email, $text)
 {
     return "<a class='email' href='mailto:" . EmailHelper::sendEmailHref($email) . "'>" . StringHelper::obscureString($text) . '</a>';
 }