gistfile1.js

$('.js-slideshow').each(function() {
            var cycle = $(this).cycle({
                slides: '> .slideshow-slide',
                swipe: true
            });

            cycle.find('.cycle-slide').click(function(e){
                cycle.cycle('next');
            });

            $(document.documentElement).keyup(function (e) {
            if (e.keyCode == 39)
                {
                    cycle.cycle('next');
                }

                if (e.keyCode == 37)
                {
                    cycle.cycle('prev');
                }

            });
        });

        $('.js-lightbox').each(function() {
            $(this).magnificPopup({
                delegate: 'a',
                mainClass: 'mfp-fade',
                gallery: {
                    enabled: true, // set to true to enable gallery
                    preload: [0, 2]
                }
            });
        });