var xmlHttp = null;

function GetXmlHttpObject()
{
  try
  {
    xmlHttp = new XMLHttpRequest();
  }
  catch(e)
  {
    try
    {
      xmlHttp = new ActiveXObject("MSXML2.XMLHTTP");
    }
    catch(e)
    {
      xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
    }
  }

  if (xmlHttp == null)
    alert("Browser does not support XMLHttpRequest().");

  return xmlHttp;
}

function getTokenID()
{
  var url = canada_post_cgi;
  url += "?get_token_id=1";
  url += "&sid=" + Math.random();

  $('#loading_image').show();

  xmlHttp = GetXmlHttpObject();
  xmlHttp.onreadystatechange = get_token_id;
  xmlHttp.open("GET", url, true); // asynchronous
  xmlHttp.send(null);

  return false;  // so <a href="#"> won't scroll the page 
}

function get_token_id()
{
  if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete")
  {
    var response = xmlHttp.responseText;
    var i = response.search(/#error#/i);

    $('#loading_image').hide();

    if (i < 0)
    {
      document.getElementById('token-id').value = response;
      document.getElementById('token_id').value = response;
    }
    else
      alert(response.substr(0, i));
  }
}

function begin_registration()
{
  var token_id = document.getElementById('token-id').value;

  if (token_id.length == 0)
  {
    alert(cpmsg0);
    return false;
  }

  $('#register').submit();
  return true;
}

function check_registration()
{
  var token_id = document.getElementById('token-id').value;

  if (token_id.length == 0)
  {
    alert(cpmsg7);
    return false;
  }
  
  return check_postal_code();
}