Modal Dialog in IE 8

Modal Dialog in IE 8

This all works fine in all other browsers but right now I have 2 major issues that are deal breakers for me using jQuery UI on my sites.

In IE 8 ( I have version IE 8 8.0.7600.16385 )

1.) The modal dialog overlay is not transparent it is a solid black color.
2.) The Close function is not working, I am playing video in the dialog and to stop the videos audio from playing after close is clicked in the other browsers I do a jQuery.Post(); this is obviously not working in IE 8.

Here is my dialog code.

  1.  <script type="text/javascript">
            jQuery(document).ready(function () {
                jQuery("#dialog").dialog({
                    bgiframe: true,
                    autoOpen: false,
                    height: 431,
                    width: 688,
                    modal: true,
                    close: function () {
                        reLoad();
                    
                    }
                });

            });
    </script>

    <script type="text/javascript">
        function reLoad() {
            jQuery.Post();
        }
    </script>