/**
  * tdx - generates an HTML </td> tag - if passed the id or class attribute used for the opening ul tag, will append a comment
  *
  * @param string $id - html id attribute
  * @param string $class - html class attribute
  * @return string
  */
 public static function tdx($id = '', $class = '')
 {
     return EEH_HTML::_close_tag('td', $id, $class);
 }