Event.observe(window, 'load', function (e) {
    (function () {
        $$('span.Message.msuccess').each(function (span) {
            new Effect.Fade(span,
                {
                    afterFinish: function (effect) {
                        var url = span.down('div').readAttribute('successredirecturl');
                        if (url != null) {
                            window.location.href = url;
                        }
                    }
                });
        });
    }).delay(5);

});