$(window).load(function() {
    $('#slider').nivoSlider({
        effect:'fade', //Specify sets like: 'fold,fade,sliceDown'
        animSpeed:200, //Slide transition speed
        directionNav:false, //Next & Prev
    });
    $('#slider2').nivoSlider({
        effect:'fade', //Specify sets like: 'fold,fade,sliceDown'
        animSpeed:200, //Slide transition speed
        directionNav:false, //Next & Prev
    });
    $('#slider3').nivoSlider({
        effect:'fade', //Specify sets like: 'fold,fade,sliceDown'
        animSpeed:200, //Slide transition speed
        directionNav:false, //Next & Prev
    });
    $('#slider4').nivoSlider({
        effect:'fade', //Specify sets like: 'fold,fade,sliceDown'
        animSpeed:200, //Slide transition speed
        directionNav:false, //Next & Prev
    });
});