Slider Create Event Gives Empty Object For Callback

Specifically, the ui object comes back empty. Browser, is FF 6.0.1. Code snippets attached.

$('div.slider').slider({

min: 0,

max: 100,

create: function(event, ui) {

$(ui.handle).closest('td').next().find('input').val()

},

animate: "fast",

slide: function(event, ui) {

$(this).closest('td').prev().find('input').val(100 - ui.value);

$(this).closest('td').next().find('input').val(ui.value);

}

});

<table>

<tbody>

<tr>

<td>% Qualitative</td>

<th>Qualitative Question Weight</th>

<td>% Quantitative</th>

</tr>

<tr>

<td style="text-align: center;"><input type="text" value="70" readonly size="3" /></td>

<td><div class="slider"></div></td>

<td style="text-align: center;"><input type="text" value="30" readonly size="3" /></td>

</tr>

</tbody>

</table>