public function setRow($row_index, $values_arr, $type=null)
    {
        $cell = null;
        foreach($values_arr as $col_index=>$val){
            $cell = $this->setCell($col_index+1, $row_index, $val, $type);
        }

        if($cell){
            return $cell->parentNode;
        }
        return false;
    }