var oXMLDoc;
    var oXMLHTTP = false;
    var lRowCount;
    var lRowIndex;

    try {
      oXMLDoc = new ActiveXObject("Msxml2.DOMDocument");
    } catch (d) {

    }

    if (oXMLDoc == null) {
      alert("Unable to create DOM document!");
      return(false);
    }

    try {
      oXMLHTTP = new ActiveXObject("Msxml2.XMLHTTP.3.0");
    } catch (e) {
      try {
        oXMLHTTP = new ActiveXObject("Msxml2.XMLHTTP");
      } catch (E) {
        oXMLHTTP = false;
      }
    }
    if (!oXMLHTTP) { alert('Unable to make http request.'); return(false); }

    // Set up the post
    oXMLHTTP.onreadystatechange = function() {
      // a readyState of 4 means we're ready to use the data returned by oXMLHTTP
      if (oXMLHTTP.readyState == 4) {
        // get the return envelope
        var szResponse = oXMLHTTP.responseText;

        // load the return into an XML data island
        oXMLDoc.loadXML(szResponse);

        if (oXMLDoc.parseError.errorCode != 0) {
          var xmlErr = oXMLDoc.parseError;
          alert("You have error " + xmlErr.reason);
        } else {
          // Process Data
          lRowCount = oXMLDoc.getElementsByTagName("LookupResults").length;
            var sPostal;
            var sCity;
            var sState;
            var sCountry;
          if (lRowCount == 0) {
            // Do Nothing - should we notify the user?
          } else if (lRowCount == 1) {
            sPostal = oXMLDoc.getElementsByTagName("LookupResults")(0).childNodes(0).text;
            sOriginalPostal = sPostal;
            sCity = oXMLDoc.getElementsByTagName("LookupResults")(0).childNodes(1).text;
            sState = oXMLDoc.getElementsByTagName("LookupResults")(0).childNodes(2).text;
            sCountry = oXMLDoc.getElementsByTagName("LookupResults")(0).childNodes(3).text;
            setPostalCityState(sPostal, sCity, sState, sCountry, postalElement, cityElement, stateElement, countryElement);
          } else {

            for (lRowIndex = 0; lRowIndex < lRowCount; lRowIndex++) {
              sPostal = oXMLDoc.getElementsByTagName("LookupResults")(lRowIndex).childNodes(0).text;
              sCity = oXMLDoc.getElementsByTagName("LookupResults")(lRowIndex).childNodes(1).text;
              sState = oXMLDoc.getElementsByTagName("LookupResults")(lRowIndex).childNodes(2).text;
              sCountry = oXMLDoc.getElementsByTagName("LookupResults")(lRowIndex).childNodes(3).text;
            }
          }
        }
      }
    }

    // send the POST to the Web service
    oXMLHTTP.open("POST", "https://webserver.com:925/AddressFunctions/AddressFunctions.asmx/GetPostalCityState", false);
    oXMLHTTP.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    oXMLHTTP.send("PostalCode=" + postalCode);
  }