<form id="form1">
<div id="one">
<input id="input1" type="text" />
<input id="input2" type="text" />
</div>
<div id="two">
<table>
<tr><td>
<input id="input3" type="text" />
<input id="input4" type="text" />
</td></tr>
</table>
</div>
</form>
$('#two > *').attr('disabled', 'disabled');