<script>

$(document).ready(function(){

    function mc(tableId, startRow, endRow, col) {

        var tb = document.getElementById(tableId);

        if (col >= tb.rows[0].cells.length) {

            return;

        }

        if (col == 0) { endRow = tb.rows.length-1; }

        for (var i = startRow; i < endRow; i++) {

            if (tb.rows[startRow].cells[col].innerHTML == tb.rows[i + 1].cells[0].innerHTML) {

                tb.rows[i + 1].removeChild(tb.rows[i + 1].cells[0]);

                tb.rows[startRow].cells[col].rowSpan = (tb.rows[startRow].cells[col].rowSpan | 0) + 1;

                if (i == endRow - 1 && startRow != endRow) {

                    mc(tableId, startRow, endRow, col + 1);

                }

            } else {

                mc(tableId, startRow, i + 0, col + 1);

                startRow = i + 1;

            }

        }

    }

        mc('table1',0,0,0);

    })

  </script>