Erro creating a dialog on div contain a table with more than 2 rows in IE

I can´t create a dialog on div cotain a table with more than 2 rows in Internet Explorer 7 (code below). It works fine in Firefox...

I'm using jQuery UI 1.6rc5 and jQuery 1.3

<div id='divDialog'>

<table width="100%">

<tr><td>Line 1</td></tr>

<tr><td>Line 2</td></tr>

<tr><td>Line 3</td></tr>

</table>

</div>

...

$('#divDialog').dialog();