$(".multiple-content div.slide").hide().eq(0).show(0, checkNav)

    $('.navigation-next').click(function() {
        $(".multiple-content div.slide:visible").hide().next().show();
        checkNav(); 
    });
    $('.navigation-prev').click(function() {
        $(".multiple-content div.slide:visible").hide().prev().show();
        checkNav();
    });

    function checkNav() {
        var currentSlide = $(".multiple-content div.slide").index($(".multiple-content div.slide:visible"));

        if (currentSlide === 0) {
            $('.navigation-prev').hide();
        }
        else if (currentSlide + 1 <= $("div.slide").length && currentSlide > 0 && currentSlide + 1 < $("div.slide").length) {
            $('.navigation-prev').show();
            $('.navigation-next').show();
        }
        else if (currentSlide + 1 === $("div.slide").length) {
            $('.navigation-next').hide();
            $('.navigation-prev').show();
        }
    }