function show_newsletter_rego() {
  document.getElementById('newsletter_rego').style.display = 'block';
}

function hide_newsletter_rego() {
  document.getElementById('newsletter_rego').style.display = 'none';
}

var subs_req;

function subscribe_to_newsletter() {

  var url   = "/ajax/newsletter_subscription.ajx.php";
  var query = "subs_name=" + document.getElementById('emailnews').value + "&subs_email=" + document.getElementById('emailnews').value;

  tmp_http_req   = new init_post_request();
  subs_req       = tmp_http_req.fn_request;

  subs_req.onreadystatechange = update_subscription_box;

  post_request(subs_req, url, query);

}

function update_subscription_box() {

  if (subs_req.readyState == 4 || subs_req.readyState == "complete") {
    data = subs_req.responseText;
    if (data.indexOf('Thank you')) {
      jAlert(data);
    }
    else {
      document.getElementById('newsletter_rego').innerHTML = data;
    }
  }

}