function sendRequest(url,callback,postData) {
	var req = createXMLHTTPObject();
	if (!req) return;
	var method = (postData) ? "POST" : "GET";
	req.open(method,url,true);
	req.setRequestHeader('User-Agent','XMLHTTP/1.0');
	if (postData)
		req.setRequestHeader('Content-type','application/x-www-form-urlencoded');
	req.onreadystatechange = function () {
		if (req.readyState != 4) return;
		if (req.status != 200 && req.status != 304) {
			alert('HTTP error ' + req.status);
			return;
		}
		callback(req);
	}
	if (req.readyState == 4) return;
	req.send(postData);
}

function sendRequestSynchron(url,postData) {
	var req = createXMLHTTPObject();
	
	
	if (!req) { alert("Request error") ; return; }
	
	var method = (postData) ? "POST" : "GET";
	req.open(method,url,false);
	req.setRequestHeader('User-Agent','XMLHTTP/1.0');
	//req.setRequestHeader("Accept-Charset","ISO-8859-1");
	//req.setRequestHeader( "Content-type", "plain/text" );
	if (postData)
		req.setRequestHeader('Content-type','application/x-www-form-urlencoded');
	req.send(postData);
	if (req.status != 200 && req.status != 304) {
		alert('HTTP error ' + req.status);
		return null;
	}
	return req;
}



var XMLHttpFactories = [
	function () {return new XMLHttpRequest()},
	function () {return new ActiveXObject("Msxml2.XMLHTTP")},
	function () {return new ActiveXObject("Msxml3.XMLHTTP")},
	function () {return new ActiveXObject("Microsoft.XMLHTTP")}
];

function createXMLHTTPObject() {
	var xmlhttp = false;
	for (var i=0;i<XMLHttpFactories.length;i++) {
		try {
			xmlhttp = XMLHttpFactories[i]();
		}
		catch (e) {
			continue;
		}
		break;
	}
	return xmlhttp;
}