[jQuery] plugin: blockui - How to Change cursor style in IE to 'not-allowed' on overlay???

[Marv]

I have a DIV blocked from data entry in IE, Firefox, Safari and Opera.
Functionally all is okay -- super plugin!!!

The only problem left is that the cursor does not change to 'not-
allowed' on the overlay when I use IE 6,7 or 8. All other browsers
render the cursor okay???

Here's the code:

        $().ready(function() {
            Protect('#divData');
            $('#cbProtected').bind('click', function(e, ui) {
                if ($(this).is(':checked'))
                    Protect('#divData');
                else
                    Unprotect('#divData');
            });
        });
        function Protect(el) {
            $(el).block({
                    message: null,
                    overlayCSS: {
                        backgroundColor: null,
                        opacity: 1.0,
                        cursor: 'not-allowed'
                    }
                });
        };
        function Unprotect(el) {
            $(el).unblock();
        };