/**
********************************************************
* Filename : ajax.iir.js
* Author : Phusit Roongroj <phusit@nectec.or.th>
* Network Technology Lab,NTL
* National Electronics and Computer Technology Center,NECTEC
* Date : 16-07-51
* Ajax for iir web application v 1.0
******************************************************/


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

// retrieves the XMLHttpRequest object
function createXmlHttpRequestObject()
{
	// will store the reference to the XMLHttpRequest object
	// 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
// make asynchronous HTTP request using the XMLHttpRequest object
function AjaxHttpRequest(param)
{
	// proceed only if the xmlHttp object isn't busy
	if (xmlHttp.readyState == 4 || xmlHttp.readyState == 0)
	{
		// retrieve the name typed by the user on the form
		// execute the quickstart.php page from the server
		xmlHttp.open("GET", param, true);

		// define the method to handle server responses
		xmlHttp.onreadystatechange = handleServerResponse;

		// make the server request
		xmlHttp.send(null);
	}
}


// executed automatically when a message is received from the server
function handleServerResponse()
{
	var result;
	// move forward only if the transaction has completed
	if(xmlHttp.readyState == 1) {
		document.getElementById('apnicreport').innerHTML = "<div class='ajaxloading'>Loading......<img src='http://internet.nectec.or.th/webstats.test/images/121809571227.gif' alt=''></div>";
	}
	else if (xmlHttp.readyState == 4)
	{

		// status of 200 indicates the transaction completed successfully
		if (xmlHttp.status == 200)
		{
			result = xmlHttp.responseText;
			document.getElementById('apnicreport').innerHTML = result;
		}
		// a HTTP status different than 200 signals an error
		else
		{
			alert("There was a problem accessing the server: " +
			xmlHttp.statusText);
		}
	}
}