【a】
<!DOCTYPE html>
<html>
<head>
<style type='text/css'>
td a {
width: 100%;
height: 100%;
display: block;
background: #cce;
}
td a:hover {
background: #ecc;
}
</style>
</head>
<body>
<table border="1">
<tr>
<td>row 1, cell 1</td>
<td>row 1, cell 2</td>
</tr>
<tr>
<td>row 2, cell 1</td>
<td><a href="#">Link</a></td>
</tr>
</table>
</body>
</html>
