I can't seem to get bgiframe to work at all

I can't seem to get bgiframe to work at all


Hello,
I'm rather new so please bare with me. I'm trying to get the bgiframe
to show when I use the dialog widget, no matter what I do, it just
doesnt show - The dialog window appears, but the bgiframe doesn't.
I link to the bgiframe like so:
<script type="text/javascript" src="js/bgiframe/jquery.bgiframe.js"></
script>
And I link to the jquery main files like so:
<script type="text/javascript" src="js/jquery-1.3.2.min.js"></script>
<script type="text/javascript" src="js/jquery-
ui-1.7.1.custom.min.js"></script>
This is my dialog:
$("#dialog").dialog({
                autoOpen: false,
                bgiframe: true,
                width:600,
                modal: true,
                overlay: {
                backgroundColor: '#000',
                opacity: 0.5
                }
                });
This is my dialog link:
$('#dialog_link').click(function(){
                    $('#dialog').dialog('open');
                    return false;
                });
Hope you can help. Thanks