<html>
<head>
<script>
function displayResult()
{
alert(document.getElementById('myTable').tHead.innerHTML);
}
</script>
</head>
<body>
<table id="myTable" border="1">
<thead>
<tr>
<th>Month</th>
<th>Savings</th>
</tr>
</thead>
<tfoot>
<tr>
<td>Sum</td>
<td>$180</td>
</tr>
</tfoot>
<tbody>
<tr>
<td>January</td>
<td>$100</td>
</tr>
<tr>
<td>February</td>
<td>$80</td>
</tr>
</tbody>
</table>
<br>
<button type="button" onclick="displayResult()">Show innerHTML of thead</button>
</body>
</html>