Get Id of Current Row in Grid - php

Question

I'm trying to get the Current Row of ID st Edit Icon
Please find the TableWidgets files as in below link
https://drive.google.com/folderview?id=0BwtwIV52Ve6kRFBJdkFCY0NvQUk&usp=sharing
Index.php
<script type="text/javascript">
$(document).ready(function() {
$('#list-grid table td div [action=tw-edit]').click(function(event) {
var rowId =$(this).closest("div.list-grid").attr("id");
alert (rowIdx);
});
});
</script>
<?php $this->beginWidget('application.widgets.TableWidget',
array(
'dataProvider'=>$dataProvider,
'fixedHead' => true,
'id' => 'list-grid',
));
?>
<?php $this->endWidget(); ?>
Grid.HTML
<div id="list-grid" class="box nominimize tablewidget" url/default/index">
<div class="content noPad">
<div class=" table-for-split" heightforsplit="200px">
<table class="table table-bordered">
<thead>
<tr>
<th class=" sorting" sortfield="id"></th>
<th class=" sorting" sortfield="dateordered"></th>
<th class="" sortfield="qty"></th>
<th class=" sorting" sortfield="tag"></th>
<th class="" sortfield="is_active"></th>
<th class="" sortfield="created"></th>
<th class="" sortfield="createdby"></th>
<th class="" sortfield="description"></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>10001</td>
<td></td>
<td>5</td>
<td></td>
<td></td>
<td></td>
<td></td>
<td></td>
<td> action=tw-edit</td>
</tr>
<tr></tr>
</tbody>
</table>
</div>
</div>
Please anyone help to resolve this.