function ab() {

    $('body').append('<div id="overlay" />');
    $('#overlay').fadeIn(300, function() {
        $('body').append('<div id="alertModalOuter"><div id="alertModal"></div></div>');
        var outer = $('#alertModalOuter');
        var modal = $('#alertModal');
        var defWidth = outer.outerWidth();
        var defHeight = outer.outerHeight();
        modal.load('alert.html' + ' #alert', function() {

            var alertBoxContent = $('#alert');

            var alertWidth = alertBoxContent.outerWidth();
            var alertHeight = alertBoxContent.outerHeight();

            var widthCombine = -((defWidth + alertWidth) / 2);
            var heightCombine = -((defHeight + alertHeight) / 2);

            modal.animate({width: alertWidth, height: alertHeight}, 200);
            outer.animate({marginLeft: widthCombine, marginTop: heightCombine}, 200, function() {
                alertBoxContent.fadeIn(200, function() {
                    $('#yes').click(function(e) {
                        e.preventDefault();
                        $('#overlay, #alertModalOuter').fadeOut(400, function() {
                            $(this).remove();
                        });
                    });
                });
            });

        });
    });

}