public function theme_multiple_heading($theme,$criteria)
	{
		$heading = '';

		if(count($this->handler_vars) === 0)
			$this->handler_vars = Controller::get_handler()->handler_vars;
		if($this->request->display_entries_by_date && count($this->handler_vars) > 0){
			$date_string = '';
			$date_string .= isset($this->handler_vars['year']) ? $this->handler_vars['year'] : '' ;
			$date_string .= isset($this->handler_vars['month']) ? '-' . $this->handler_vars['month'] : '' ;
			$date_string .= isset($this->handler_vars['day']) ? '-' . $this->handler_vars['day'] : '' ;
			$heading = sprintf(_t('Dated %s'), $date_string);
		}
		return $heading;
	}