$(window).load(function() {
    $('#slider').nivoSlider({
        effect: 'fade',
        animSpeed: 1000,
        pauseTime: 5000    });
    if ($('#slider').children('a').size() <= 1 ) {
        $('.nivo-prevNav').css('display', 'none');
        $('.nivo-nextNav').css('display', 'none');
    }

    $('#slideshow a.external').each(function() {
        $(this).click(function() {
            var $newWindow = window.open($(this).attr('href'));
            $newWindow.focus();
            return false;
        });
    });
});