/** 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;
}