$.fn.slider = function(totalSlides, cslide) {
    $('.prevSlide').click(function() {
        var p = Number(this.rel);
        var c = String(p - 1);
        if (p > 1) {
            $('#slideContent-' + p.toString()).hide();
            $('#slideContent-' + c).show();
            cslide--;
        }
        $('.slideNumber').html(cslide.toString() + "/" + totalSlides.toString());

    });
    $('.nextSlide').click(function() {
        var p = Number(this.rel);
        var c = String(p + 1);
        if (p < totalSlides) {
            $('#slideContent-' + p.toString()).hide();
            $('#slideContent-' + c).show();
            cslide++;
        }
        $('.slideNumber').html(cslide.toString() + "/" + totalSlides.toString());
    });
    $('.slideNumber').html(cslide.toString() + "/" + totalSlides.toString());

};