Rowspan in Grid

There is an opportunity to set a rowspan in a grid.
You can set it in the xml and by the script (using setRowspan method).
setRowspan method has 3 parameters:
row id
column index
rowspan
Source
<link rel="STYLESHEET" type="text/css" href="../../codebase/dhtmlxgrid.css">
<link rel="stylesheet" type="text/css" href="../../codebase/skins/dhtmlxgrid_dhx_skyblue.css">
<script  src="../../codebase/dhtmlxcommon.js"></script>
<script  src="../../codebase/dhtmlxgrid.js"></script>
<script  src="../../codebase/ext/dhtmlxgrid_rowspan.js"></script>
<script  src="../../codebase/dhtmlxgridcell.js"></script>
 
 
 
<table width="600px">
    <tr>
        <td>
            <div id="gridbox" style="width:100%;height:270px;background-color:white;"></div>
        </td>
    </tr>
    <tr>
        <td>
    <input type="button" name="a1" value="row span (1)" onclick="if(mygrid.getSelectedId()){mygrid.setRowspan(mygrid.getSelectedId(),mygrid.getSelectedCellIndex(),1)} else alert('Cell is not selected !')">
<input type="button" name="a1" value="row span (2)" onclick="if(mygrid.getSelectedId()){mygrid.setRowspan(mygrid.getSelectedId(),mygrid.getSelectedCellIndex(),2)} else alert('Cell is not selected !')">
<input type="button" name="a1" value="row span (3)" onclick="if(mygrid.getSelectedId()){mygrid.setRowspan(mygrid.getSelectedId(),mygrid.getSelectedCellIndex(),3)} else alert('Cell is not selected !') ">
    </td></tr>
</table>
 
<script>mygrid = new dhtmlXGridObject('gridbox');
mygrid.setImagePath("../../codebase/imgs/");
mygrid.setHeader("Sales,Book Title,Author,Price,In Store,Shipping,Bestseller,Date of Publication");
mygrid.setInitWidths("50,150,100,80,80,80,80,200");
mygrid.setColAlign("right,left,left,right,center,left,center,center");
mygrid.setColTypes("dyn,edtxt,ed,price,ch,co,ra,ro");
mygrid.setColSorting("str,str,str,str,str,str,str,str");
mygrid.init();
mygrid.setSkin("dhx_skyblue");
mygrid.enableRowspan(true);
mygrid.loadXML("../common/grid_rowspan.xml", function() {
    mygrid.setRowspan(3, 3, 3);
    mygrid.setRowspan(3, 2, 2);
});</script>