<html>
<head>
<script>
function displayResult()
{
var table=document.getElementById("myTable");
var row=table.insertRow(0);
var cell1=row.insertCell(0);
var cell2=row.insertCell(1);
cell1.innerHTML="New";
cell2.innerHTML="New";
}
</script>
</head>
<body>
<table id="myTable" border="1">
<tr>
<td>cell 1</td>
<td>cell 2</td>
</tr>
<tr>
<td>cell 3</td>
<td>cell 4</td>
</tr>
</table>
<br>
<button type="button" onclick="displayResult()">Insert new row</button>
</body>
</html>