<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>index</title>
<style type="text/css">
#div1{width: 100px;height:100px;background: red;}
</style>
<script type="text/javascript">
window.onload = function()
{
var oTab = document.getElementById('tab1');
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</head>
<body>
<table border="1" width="300" id="tab1">
<thead>
<td>ID</td>
<td>NAME</td>
<td>AGE</td>
</thead>
<tbody>
<tr>
<td>1</td>
<td>John</td>
<td>27</td>
</tr>
<tr>
<td>2</td>
<td>Lucy</td>
<td>27</td>
</tr>
<tr>
<td>3</td>
<td>Dan</td>
<td>26</td>
</tr>
<tr>
<td>4</td>
<td>Ben</td>
<td>30</td>
</tr>
</tbody>
</table>
</body>
</html>