public static function renderCallLog($id)
 {
     $vars = array();
     $vars['id'] = $id;
     $vars['log'] = '';
     $a = ADB::getCallLog($id);
     foreach ($a as $e) {
         $i = '<li>';
         $i .= '<span>' . $e['ctime'] . ' - ' . $e['who'] . '</span>';
         $i .= '<div>' . nl2br($e['comment']) . '</div>';
         $i .= "</li>\n";
         $vars['log'] .= $i;
     }
     return Utils::at($vars, 'calllog');
 }