function makeLink(o,e) {
  var myLink = document.getElementById('myLink');
  if (detectEnter(e)) {
    window.location.href = myLink.href;
    return false;
  }
  var target = o.value;
  if (target != null && target.length > 0) {
    if (target.indexOf(":") < 0) {
      target = "http://" + target;
    }
    if (target.indexOf(".") < 0) {
      target += ".com";
    }
  }
  myLink.href = target;
  myLink.innerHTML = target;
}

function detectEnter(e) {
  var characterCode;
  if (e && e.which) {
    e = e;
    characterCode = e.which;
  } else {
    e = event
    characterCode = e.keyCode;
  }
  return (characterCode == 13);
}