'rowSpan' Example
<html> <body> <script language="JavaScript"> function function1() { document.getElementById("th1").rowSpan = 2; } function function2() { location.reload(); } </script> <table width="542" border="10" bordercolor="red" cellpadding="20"> <tr> <th id="th1">Cell 1</th> <th>Cell 2</th> <th id="th5">Cell 3</th> </tr> <tr> <th>Cell 4</th> <th id="th2">Cell 5</th> <th>Cell 6</th> </tr> <tr> <th>Cell 7</th> <th>Cell 8</th> <th>Cell 9</th> </tr> <tr> <th >Cell 10</th> <th >Cell 11</th> <th >Cell 12</th> </tr> </table> <input type="button" value="Span(2) Cell 1" onClick="function1();"> <input type="button" value="Restore" onClick="function2();"> </body> </html>