text: function openHero(evt, heroClass) {
      var i, gallery, tab;
      gallery = document.getElementsByClassName("gallery");
      for (i = 0; i < gallery.length; i++) {
          gallery[i].style.display = "none";
      }
      tab = document.getElementsByClassName("menu");
      for (i = 0; i < tab.length; i++) {
          tab[i].className = tab[i].className.replace(" active", "");
      }
      document.getElementById(heroClass).style.display = "block";
      evt.currentTarget.className += " active";
  }
  document.getElementById("defaultOpen").click();