function show_hide_id(id, label_id)
{ if(document.getElementById(id).style.display == "none")
  { document.getElementById(id).style.display = "block";
    document.getElementById(label_id).innerHTML = "Скрыть";
  }
  else
  { document.getElementById(id).style.display = "none";
    document.getElementById(label_id).innerHTML = "Показать";
  }
}

function view_words_quantity(id, quantity_viewer_id)
{ id_value = document.getElementById(id).value;
  id_length = id_value.length;
  words_quantity = 1;
  for(counter = 0; counter < id_length; counter ++) if(id_value.charAt(counter) == "\n") words_quantity ++;

  document.getElementById(quantity_viewer_id).innerHTML = words_quantity;
}