$(window).load(function() {
    $('#slider').nivoSlider({
        effect:'fade',
        slices:1,
        animSpeed:800,
        pauseTime:4000,
        directionNav:true,
        directionNavHide:true,
        controlNav:false,
        controlNavThumbs:false,
        controlNavThumbsFromRel:false,
        controlNavThumbsSearch: '.jpg',
        controlNavThumbsReplace: '_thumb.jpg',
        keyboardNav:true,
        pauseOnHover:false,
        manualAdvance:false,
        captionOpacity:0.5,
        beforeChange: function(){},
        afterChange: function(){},
        slideshowEnd: function(){}
    });
});