function onClick_Box1(id)
{
  var is_empty = document.getElementById("is_empty["+id+"]").checked;
  var ws_desc = document.getElementById("ws_desc["+id+"]");
  var ws_kw   = document.getElementById("ws_kw["+id+"]");

  ws_desc.disabled = is_empty ? true : false;
  ws_kw.disabled   = is_empty ? true : false;

  ws_desc.value = is_empty ? "n/a" : "";
  ws_kw.value   = is_empty ? "n/a" : "";

  return;
}