33      * @param int $cell_id Cell order in a row.
35     public function insertRowspan($rowspan, $cell_id) {  argument
36         $rs = new Rowspan($rowspan, $cell_id);
42      * @param int $cell_id Cell order.
45     public function decreaseRowspan($cell_id) {  argument
46         $i = $this->findRowspan($cell_id);
62      * @param int $cell_id Cell order
65     public function getRowspan($cell_id) {  argument
66         $i = $this->findRowspan($cell_id);
75      * @param int $cell_id Cell order
78     protected function findRowspan($cell_id) {  argument
80         while ($i < count($this->rowspans) && $cell_id != $this->rowspans[$i]->getCellId()) {