/** 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;
}