<div class="box1"><a href="#addimg" class="plus2"></a><div id="addimg" style="width: 17.4%;height: 25px;"  class="white-popup mfp-hide">
       <input type="button" id="baddimg" style="float: left;" value="Añadir imágenes" onClick="addInput('dynamicInput');" />
       <div id="loading"></div>
</div><a href="#" class="jcarouselimgs-control-next arrowimg-next"></a><a href="#" class="jcarouselimgs-control-prev arrowimg-prev"></a><h2 class="infotitle">OUR PORTFOLIO</h2>
 <div class="jcarouselimgs"  data-jcarousel="true">
                    <ul  class="popupimg">
                        <li><a href="Imagenes/img1.png" class="image-link"><img src="Imagenes/img1.png" alt="Img1" title="Img1"></a></li>
                        <li><a href="Imagenes/img2.png" class="image-link"><img src="Imagenes/img2.png" alt="Img2" title="Img2"></a></li>
                        <li><a href="Imagenes/img3.png" class="image-link"><img src="Imagenes/img3.png" alt="Img3" title="Img3"></a></li>
                        <li><a href="Imagenes/img4.jpg" class="image-link"><img src="Imagenes/img4.jpg" alt="Img4" title="Img4"></a></li>
                        <li><a href="Imagenes/img5.jpg" class="image-link"><img src="Imagenes/img5.jpg" alt="Img5" title="Img5"></a></li>
                        <li><a href="Imagenes/img6.jpg" class="image-link"><img src="Imagenes/img6.jpg" alt="Img6" title="Img6"></a></li>

                    </ul>
              </div>
        </div>

$(function() {
        var jcarousel = $('.jcarouselimgs');

        jcarousel
            .on('jcarousel:reload jcarousel:create', function () {
                var width = $('.box1').width();

          $(function() {
    $('.jcarouselimgs').jcarousel({
        // Core configuration goes here
    });

    $('.arrowimg-prev').jcarouselControl({
        target: '-=2'
    });

    $('.arrowimg-next').jcarouselControl({
        target: '+=2'
    });
});

                $('.jcarouselimgs').css('width', width + 'px');
                jcarousel.jcarousel('items').css('width', width + 'px');
            });

    });
})(jQuery);