/**
	AnAA - Ajax Framework
	Version 1.8
	www.wootmedia.fr
	(c) 2007-2010 Matthieu Requenna.
	Some gorgeous AJAX functions.
	Free under the GNU GPL 2.0 Licence.
*/

var AACaching = false;

function AACreate()
{
    var request = false;
        try {
            request = new ActiveXObject('Msxml2.XMLHTTP');
        }
        catch (err2) {
            try {
                request = new ActiveXObject('Microsoft.XMLHTTP');
            }
            catch (err3) {
		try {
			request = new XMLHttpRequest();
		}
		catch (err1)
		{
			request = false;
		}
		}
	}
    return request;
}

function AARead(url, fun, element)
{
	var xhr = AACreate();
	var ext = url.substr(url.length - 3);
	var isXML =  (ext == "xml");

	xhr.onreadystatechange=function()
	{
		if(xhr.readyState == 4)
		{
			if(xhr.status == 200)
			{
				var content;
				if(isXML)
					content = xhr.responseXML;
				else
					content = xhr.responseText;
				fun(content, element);
			}
		}
	};

	if(AACaching == false)
		url = url + "?nocache=" + Math.random();
	xhr.open("GET", url , true);
	xhr.send(null);
}

function AALoadXML(url, fun, element)
{
	var xhr = AACreate();
	xhr.onreadystatechange=function()
	{
		if(xhr.readyState == 4)
		{
			fun(xhr.responseXML, element);
		}
	};
	xhr.open("GET", url , true);
	xhr.send(null);
}

function AAWrite(url, data, fun)
{
	var xhr = AACreate();

	xhr.onreadystatechange=function()
	{
		if(xhr.readyState == 4)
		{
			if(fun != null) fun(xhr.responseText);
		}
	};
	xhr.open("POST", url, true);
	xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
	xhr.send(data);
}

function AAGetBody(content)
{
	var x = content.indexOf("<body");
	if(x == -1) return "";

	x = content.indexOf(">", x);
	if(x == -1) return "";

	var y = content.lastIndexOf("</body>");
	if(y == -1) return "";

	return content.slice(x + 1, y);
}

function AAPutHTML(content, target)
{
	target.innerHTML = AAGetBody(content);
}

function AALoadHTML(url, fun, storage, param)
{
	var xhr = AACreate();
	xhr.onreadystatechange=function()
	{
		if(xhr.readyState == 4)
		{
			if(xhr.status == 200)
			{
				storage = document.getElementById(storage);
				storage.innerHTML = AAGetBody(xhr.responseText);
				fun(storage, param);
			}
		}
	};

	if(AACaching == false)
		url = url + "?nocache=" + Math.random();
	xhr.open("GET", url , true);
	xhr.send(null);

}

function AAHead(url, key, fun, element)
{
	var xhr = AACreate();

	xhr.onreadystatechange = function()
	{
		if(xhr.readyState == 4)
		{
			var value;
			if (xhr.status == 200)
			{
				 value = xhr.getResponseHeader(key);
			}
			else
			{
				if(xhr.status==404)
					value = url + " doesn't exist!";
				else
					value = "Error, status is " + xhr.status;
			}
			fun(value, element);
		}
	}
	xhr.open("HEAD", url, true);
	xhr.send(null);
}

function AAWrite2(url, data, type, divfun)
{
	var xhr = AACreate();

	xhr.onreadystatechange=function()
	{
		if(xhr.readyState == 4)
		{
			if(type == 'div')
			{
			 	element = document.getElementById(divfun);
				element.innerHTML = xhr.responseText;
			}
			else
			{
				// alert('DIRECT : ' + xhr.responseText);
				divfun(xhr.responseText);
			}
		}
	};
	xhr.open("POST", url, true);
	xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
	xhr.send(data);
}