<html>
<head runat="server">
<title>柴伟伟</title>
    <script language="javascript" type="text/javascript">

 function iRow(tableID)
{
                var v = document.getElementById(tableID).insertRow(0);
                var y = v.insertCell(0);
                var z = v.insertCell(1);
                y.innerHTML = "新增行和列";
                z.innerHTML = "新增列和行";
 }
   
</script>
</head>
<body >
    <form id="form1" runat="server">
    <div id="showTime">
    <table id="myTable" border="1">   
<tr>
    <td>第一行第一列</td>
    <td>第一行第二列</td>
</tr><tr>
    <td>第二行第一列</td>
    <td>第二行第二列</td>
    </tr>
    </table>
    <input  type="button" id="insert" value="插入新的行" onclick="iRow('myTable')" />   
</div>  
</form>
</body>
</html>