$(document).ready(function() {
    //scroll the message box to the top offset of browser's scrool bar
    $(window).scroll(function() {
        $('#MaintenanceBox').animate({ top: $(window).scrollTop() + "px" }, { queue: false, duration: 350 });
    });
    $("#MaintenanceBox").css('filter', 'alpha(opacity=90)');
    $("#MaintenanceBox").fadeIn(400);
    $("#MaintenanceBox").click(function() { $(this).fadeOut(400) });

});