/** 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("charset","iso-8859-1");
				xmlhttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
			}
			
			xmlhttp.onreadystatechange = function(){
				if (xmlhttp.readyState == 4 && !bComplete){
					
					/*
					var headers = xmlhttp.getAllResponseHeaders().split(/\r?\n/); var mensaje = "";
					for(var i in headers){
						mensaje += headers[i] + "\n\r";
					}
					alert(mensaje);
					*/
					
					bComplete = true;
					fnDone(xmlhttp);
			}};
			xmlhttp.send(sVars);
		}
		catch(z) { return false; }
		return true;
  };
  return this;
}