>>
>
>I've changed the above to the simplest form and still the Close button on the form does nothing
>
>

>function edit(com, grid)
>{
>        $('.trSelected', grid).each(function () {
>          
>                var id = $(this).attr('id');
>                id = id.substring(id.lastIndexOf('row') + 3);
>                currentId = id;
>                $('#fntype').val('Edit');
>            //  var url = '/Client/Edit/' + id;            
>                var url = "/Home/About/";
>                $("#sform").load(url).dialog({ modal: true, width: 1200, height: 750 });
>
>        });
>
>    }

>

Did you try pointing the url to a simple page that didn't contain anything (no JS, no CSS, nothing) as I previously suggested?

BTW - The close button on the dialog definitely works under Chrome,