public static function get(TS_User &$current_user, TS_Module_HRM_Employee &$employee, array $filter_ar = array())
 {
     // set static variables
     self::$employee =& $employee;
     self::$current_user =& $current_user;
     self::$filter_ar = $filter_ar;
     // get header and content, and return full table
     $tb_content = self::getHeaderRow();
     $tb_content .= self::getRecordRows();
     return TS_Module_HRM_PresencePlanning_InlineEditing::getJquery() . HTML::Table($tb_content, 'extras_small', 'clearfix extras');
 }