// stores the reference to the XMLHttpRequest object
var xmlHttp = createXmlHttpRequestObject(); 

// retrieves the XMLHttpRequest object
function createXmlHttpRequestObject() 
{	
  // will store the reference to the XMLHttpRequest object
  var xmlHttp;
  // if running Internet Explorer
  if(window.ActiveXObject)
  {
    try
    {
      xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
    }
    catch (e) 
    {
      xmlHttp = false;
    }
  }
  // if running Mozilla or other browsers
  else
  {
    try 
    {
      xmlHttp = new XMLHttpRequest();
    }
    catch (e) 
    {
      xmlHttp = false;
    }
  }
  // return the created object or display an error message
  if (!xmlHttp)
 
    alert("Error creating the XMLHttpRequest object.");
  else 
    return xmlHttp;
}



// make asynchronous HTTP request using the XMLHttpRequest object 
function process2(arg2, state)
{
  // proceed only if the xmlHttp object isn't busy
  if (xmlHttp.readyState == 4 || xmlHttp.readyState == 0)
  {
        //alert("where_to_buy/wheretobuy_code.php?ids=" + arg2 + "&state=" + state);
        // retrieve the name typed by the user on the form
        //id = encodeURIComponent(document.getElementById("film_code_input").value);
        // execute the grab_cust_listing.php page from the server
        xmlHttp.open("GET", "where_to_buy/wheretobuy_code.php?ids=" + arg2 + "&state=" + state, true);  
        // define the method to handle server responses
        xmlHttp.onreadystatechange = handleServerResponse;
        // make the server request
        xmlHttp.send(null);   
  }
  else
    // if the connection is busy, try again after one second  
    setTimeout('process2()', 1000);
}



function handleServerResponse() 
{
  // move forward only if the transaction has completed
  if (xmlHttp.readyState == 4) 
  {
    // status of 200 indicates the transaction completed successfully
    if (xmlHttp.status == 200) 
    {
      // extract the XML retrieved from the server
      xmlResponse = xmlHttp.responseXML;
      // obtain the document element (the root element) of the XML structure
      xmlDocumentElement = xmlResponse.documentElement;
      // get the text message, which is in the first child of
      // the the document element
      helloMessage = xmlDocumentElement.firstChild.data;
      
      //alert(helloMessage);
      if(helloMessage==undefined || helloMessage=="" ){
        helloMessage = "No Resellers Found";
      }
      
      //alert("running: " + helloMessage);
      // update the client display using the data received from the server
      document.getElementById("textArea").innerHTML = helloMessage;
      // restart sequence
      //setTimeout('process()', 1000);
    } 
    // a HTTP status different than 200 signals an error
    else 
    {
      //alert("There was a problem accessing the server: " + xmlHttp.statusText);
    }
  }
}