$(window).load(function() {
    $('#slider').nivoSlider({
        effect: 'random',
        slices: 10,
        animSpeed: 800,
        pauseTime: 4000,
        directionNav: true,
        directionNavHide: true,
        controlNav: false,
        keyboardNav: false,
        pauseOnHover: true,
        manualAdvance: false,
        beforeChange: function() { },
        afterChange: function() { },
        slideshowEnd: function() { }
    });
});