【children_index】
<html>
<head>
<script type="text/javascript" src='http://code.jquery.com/jquery-1.5.2.js'></script>
<script type="text/javascript">
$(document).ready(function(){
$("td:lt(2)").css("color", "red");
});
</script>
</head>
<body>
<table>
<tr><td>First</td></tr>
<tr><td>Middle</td></tr>
<tr><td>Last</td></tr>
</table>
</body>
</html>
