jqDialog and IE6 problem

jqDialog and IE6 problem

On another post I discussed how I am usig jqDialog and it works great
if Firefox. But when I opened the page in IE6 on Win/XP I got the
following error:
Runtime Error
Line: 127
Error: Expected identifier, string or number
I am too new to jQuery and JavaScript to understand what need to be
fixed. I downloaded Version 1.2.1 from the plugin site. My code is as
follows:
<link href="CSS/AppCSS/jqdialog.css" rel="stylesheet" type="text/
css" />
<script src="JavaScript/jquery-1.3.2.js" type="text/javascript"></
script>
<script src="JavaScript/jqdialog.js" type="text/javascript"></
script>
$(document).ready(function(){
// confirm dialog
$('#btnDelete').click(function() {
var userName = $('#comboExistingUsers').val();
jqDialog.confirm("CONFIRM DELETE <BR /><BR />Delete "
+ userName + " now, are you sure?",
             function() { setTimeout('__doPostBack(\'btnDelete\',\'\')',
0); },     // callback function for 'YES' button
             function() { return false; }     // callback function for 'NO'
button
         );
return false;
});
});
Any advice how to fix this for IE?
TIA,
John
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