text: 
  function Laba(evt, Tab) {
      var i, tabcontent, tablinks;
      tabcontent = document.getElementsByClassName("tabcontent");
      for (i = 0; i < tabcontent.length; i++) {
          tabcontent[i].style.display = "none";
      }
      tablinks = document.getElementsByClassName("tablinks");
      for (i = 0; i < tablinks.length; i++) {
          tablinks[i].className = tablinks[i].className.replace(" active", "");
      }
      document.getElementById(Tab).style.display = "block";
      evt.currentTarget.className += " active";
  }
  
  function openTab(tabName) {
      var i, x;
      x = document.getElementsByClassName("containerTab");
      for (i = 0; i < x.length; i++) {
        x[i].style.display = "none";
      }
      document.getElementById(tabName).style.display = "block";
    }
  