text: //when page is loading:
  $(document).ready(function(){
      $('button#calc-tab').toggleClass('active'); // default show-up of 'calc' content is set by guid.css
  });
  
  function openTab(evt, Name) {
      // Declare all variables
      var i, tabcontent, tablinks;
  
      // Get all elements with class="tabcontent" and hide them
      tabcontent = document.getElementsByClassName("tabcontent");
      for (i = 0; i < tabcontent.length; i++) {
          tabcontent[i].style.display = "none";
      }
  
      // Get all elements with class="tablinks" and remove the class "active"
      tablinks = document.getElementsByClassName("tablinks");
      for (i = 0; i < tablinks.length; i++) {
          tablinks[i].className = tablinks[i].className.replace(" active", "");
      }
  
      // Show the current tab, and add an "active" class to the link that opened the tab
      document.getElementById(Name).style.display = "block";
      evt.currentTarget.className += " active";
  } 
  
  
  