/* Popup */
var pop = null;

function popdown() {
  if (pop && !pop.closed) pop.close();
}

function popup(obj,w,h) {
  var url = (obj.getAttribute) ? obj.getAttribute('href') : obj.href;
  if (!url) return true;
  w = (w) ? w += 20 : 150;
  h = (h) ? h += 25 : 150;
  var args = 'width='+w+',height='+h+',resizable=yes,scrollbars=1';
  popdown();
  pop = window.open(url,'',args);
  return (pop) ? false : true;
}

/* Submit */
function submitenter(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;
  }
}