<HEAD> <SCRIPT src=tableDom.js> </SCRIPT> <SCRIPT> function doIt() { var table = document.getElementsByTagName("TABLE")[0]; var cg = document.createElement("COLGROUP", null); cg.width=200 var col = document.createElement("COL", null); cg.appendChild(col); col = document.createElement("COL", null); cg.appendChild(col); table.appendChild(cg); } </SCRIPT> </HEAD> <BODY onload="doIt()"> <table bgcolor=orange border> <colgroup> <col width=100> </colgroup> <tr> <td>col-100</td><td>cg-200</td><td>cg-200</td> </tr> </table> </BODY></HTML>