<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title> jQuery Filter ID </title>
<script src="jquery-1.4.1-vsdoc.js" type="text/javascript"></script>
</head>
<body>
<table border = "1">
<tr>
<td id="tdA12">12</td>
<td id="tda13">13</td>
</tr>
<tr>
<td id="tdW140">14</td>
<td id="tdQ15">15</td>
</tr>
</table>
<script type="text/javascript">
<!--
$(document).ready(function () {
$('td').filter(function() {
return this.id.match(/^td[A-Z]{1}[0-9]{1,2}$/);
}).css('color','red');
});
//-->
</script>
</body>
</html>