function states() {
  alert("aca estoy");
  var form = document.forms['easy'];
  var resultado = document.getElementById("estados");
  var contenttype = 'application/x-www-form-urlencoded';
  var req;
  if (window.XMLHttpRequest) {
    req = new XMLHttpRequest();
  } else {
    req = new ActiveXObject("Microsoft.XMLHTTP");
  }
  req.open('POST', 'states.php', true);
  req.setRequestHeader('Content-Type', contenttype);
  req.onreadystatechange =
    function() {
      if (req.readyState == 4)
      resultado.innerHTML = req.responseText;
    }
  req.send('country=' + escape(form.countries.value));
}

function cambio(dato) {
  document.easy.action="NewUserEn.php";
  document.easy.submit();
}