josep2.js

$(window).scroll(function() {

  var nav = $(".navbar-collapse");
  var position = nav.position();

  if (position.top >= 0) {
    $('#carousel-402664').css("display", 'inherit')
    $('#carousel-402664').css("margin-top", -$(window).scrollTop())
  } else if (position.top < 0) {
    $('#carousel-402664').css("display", 'none')
    $('#carousel-402664').css("margin-top", 0)
  }

});

$(window).scroll(function() {

  var navSm = $(".navbar-header");
  var positionSm = navSm.position();

  if (positionSm.top >= 0) {
    $('#carousel-402664').css("display", 'inherit')
    $('#carousel-402664').css("margin-top", -$(window).scrollTop())
  } else if (positionSm.top < 0) {
    $('#carousel-402664').css("display", 'none')
    $('#carousel-402664').css("margin-top", 0)
  }

});