1.7.2 bgiframe IE6 select still shows through div

1.7.2 bgiframe IE6 select still shows through div

Using dialog I set to bgiframe to true
$(function() {
$("#addcontact").dialog({
title: 'Add New Contact',
autoOpen: false,
bgiframe: true,
width: 675,
modal: true
});
});
yet the select element still shows through the div.
From what I can tell bgiframe is integrated into jquery 1.7.2 I've
tried with and without the bgiframe plugin and it doesn't seem to be
doing any good.
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