/* JS for showing items on webpages  */

function showAndHide(theId)
{
   var el = document.getElementById(theId)

   if (el.style.display=="none")
   {
      el.style.display="block"; //show element
   }
   else
   {
      el.style.display="none"; //hide element
   }
}

function showItem(ver) {
  document.getElementById('item1').style.display = "block";
  document.getElementById('item2').style.display = "block";
  
  if (ver == "item1") {
    document.getElementById('sn1').style.display = "block";
  }
  
  if (ver == "item2") {
    document.getElementById('item2').style.display = "block";
  }
}
/*
hidden { display: none; }
unhidden { display: block; }

function unhide(divID) {
  var item = document.getElementById(divID);
  if (item) {
    item.className=(item.className=='hidden')?'unhidden':'hidden';
  }
}
*/