/** 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;
}