This code is supposed to find all table rows with a class of "selected", remove that class, then find all checked inputs that are descendants of a tr and give its tr a class of selected.  The problem is, that even radio boxes that are not checked are being returned by $(' tr input:checked', '#deviceSelection') and everything is getting a class of selected.  Anyone know whats wrong?  I'm using jQuery 1.4.1

<script>
function updateSelectedRows() {
    $(' tr .selected', '#deviceSelection').removeClass('selected');
    $(' tr input:checked', '#deviceSelection').closest('tr').addClass('selected');
}

$('input:radio, input:checkbox').live('change', updateSelectedRows);
</script>

<tbody id="deviceSelection">
<tr class="odd">
        <td><input id="deviceGroupIdSelector" name="deviceGroupIdSelector" value="2" type="radio"></td>
</tr>
<tr>
        <td><input id="deviceGroupIdSelector" name="deviceGroupIdSelector" value="1" type="radio"></td>
</tr>
</tbody>