/** XHConn - Simple XMLHTTP Interface - bfults@gmail.com - 2005-04-08        **
 ** Code licensed under Creative Commons Attribution-ShareAlike License      **
 ** http://creativecommons.org/licenses/by-sa/2.0/                           **/

function XHConn() {
	var xmlhttp, bComplete = false;
	try {
		xmlhttp =  new ActiveXObject("Msxml2.XMLHTTP");
	}
	catch (e) {
		try {
			xmlhttp =  new ActiveXObject("Microsoft.XMLHTTP");
		}
		catch (e) {
			try {
				xmlhttp =  new XMLHttpRequest();
			}
			catch (e) {
				xmlhttp = false;
			}
		}
	}
	if (!xmlhttp)return null;
	this.connect = function (sURL, sMethod, sVars, fnDone) {
		if (!xmlhttp)return false;
		bComplete = false;
		sMethod = sMethod.toUpperCase();
		try {
			if (sMethod == "GET") {
				xmlhttp.open(sMethod, sURL + "?" + sVars, true);
				sVars = "";
			}
			else {
				xmlhttp.open(sMethod, sURL, true);
				xmlhttp.setRequestHeader("Method", "POST " + sURL + " HTTP/1.1");
				xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
			}
			xmlhttp.onreadystatechange = function () {
				if (xmlhttp.readyState == 4 && !bComplete) {
					bComplete = true;
					fnDone(xmlhttp);
				}
			};
			xmlhttp.send(sVars);
		}
		catch (z) {
			return false;
		}
		return true;
	};
	return this;
}

/* example

function xxx() {
	var myConn = new XHConn();
	if (!myConn) alert("XMLHTTP not available. Try a newer/better browser.");
	var fnWhenDone = function (oXML) {
		document.getElementById("searchresults").innerHTML=oXML.responseText;
	};
	var a = document.getElementById("id-3").value;
	myConn.connect("livesearch.php", "GET", "a="+a, fnWhenDone);
} */