function jsSubmitEnter(myfield,e) {
  var keycode;
  if (window.event) keycode = window.event.keyCode;
  else if (e) keycode = e.which;
  else return true;

  if (keycode == 13) {
   myfield.form.submit();
   return false;
   } else return true;
}

function js_objid_on(obj) {
  document.getElementById(obj).style.display = 'block';
}

function js_objid_off(obj) {
  document.getElementById(obj).style.display = 'none';
}