function showextras(id) {
  var blocktype = document.getElementById('extra'+id).style.display;
  if(document.getElementById('extra'+id).style.display != "block") {
    document.getElementById('extra'+id).style.display = "block";
    document.getElementById('more'+id).innerHTML = "Close section >>";
  } else {
    document.getElementById('extra'+id).style.display = "none";
    document.getElementById('more'+id).innerHTML = "Read More >>";
  }
}