corner.js plugin, keep getting shadow behind the round area?

corner.js plugin, keep getting shadow behind the round area?

Hey guys,
I would normally not bother with IE, but sometimes it is demanded, so trying to get round corners going here.
Using Mr. Alsup's corner.js plugin, here is the code I call it with,

  1. <script type="text/javascript" charset="utf-8">
        $(document).ready(function() {
        $("#header").corner();
        $("#wrapper").corner();

    });
    </script>





But I keep getting a 'shadow' or something behind the newly made roundness. Does that make sense? Here is a screenshot for visual funzies. ;)
Thanks guys.