$(document).ready(function() {

  $('.image-popup-vertical-fit').magnificPopup({
    type: 'image',
    closeOnContentClick: true,
    mainClass: 'mfp-img-mobile',
    image: {
      verticalFit: true
    }
    
  });

  $('.image-popup-fit-width').magnificPopup({
    type: 'image',
    closeOnContentClick: true,
    image: {
      verticalFit: false
    }
  });

  $('.image-popup-no-margins').magnificPopup({
    type: 'image',
    closeOnContentClick: true,
    closeBtnInside: false,
    fixedContentPos: true,
    mainClass: 'mfp-no-margins mfp-with-zoom', // class to remove default margin from left and right side
    image: {
      verticalFit: true
    },
    zoom: {
      enabled: true,
      duration: 300 // don't foget to change the duration also in CSS
    }
  });

  $('.navbar-fixed-top').addClass('opaque');
  $(window).scroll(function() {
        if($(this).scrollTop() < 400) {
            $('.navbar-fixed-top').addClass('opaque');
      } else {
            $('.navbar-fixed-top').removeClass('opaque');
        }
    });
});