function WebService() {
      this.action = " ";
      this.url = "";
  }
  
  WebService.prototype.buildRequest = function () {
      return "";
  };
  
  WebService.prototype.handleResponse = function (oSOAP) {
  
  };
  
  WebService.prototype.send = function () {
  
      if (isMoz) {        
          try {
              netscape.security.PrivilegeManager.enablePrivilege("UniversalBrowserRead");
          } catch (oError) {
              alert(oError);
              return false;
          } 
      }
      
      var oRequest = new XMLHttpRequest;
      oRequest.open("post", this.url, false);
      oRequest.setRequestHeader("Content-Type", "text/xml");
      oRequest.setRequestHeader("SOAPAction", this.action);
      oRequest.send(this.buildRequest());
      if (oRequest.status == 200) {
          return this.handleResponse(oRequest.responseText);
      } else{
          throw new Error("Request did not complete, code " + oRequest.status);
      }
  };
  
  function TemperatureService() {
          WebService.apply(this);
          this.url = "http://services.xmethods.net:80/soap/servlet/rpcrouter";
          this.zipcode = "";
  }
  
  TemperatureService.prototype = new WebService;
  
  TemperatureService.prototype.buildRequest = function () {
      var oBuffer = new StringBuffer();
      
      oBuffer.append("<soap:Envelope xmlns:n=\"urn:xmethods-Temperature\" ");
      oBuffer.append("xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\" ");
      oBuffer.append("xmlns:soapenc=\"http://schemas.xmlsoap.org/soap/encoding/\" ");
      oBuffer.append("xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" ");
      oBuffer.append("xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\">");
      oBuffer.append("<soap:Body soap:encodingStyle=");
      oBuffer.append("\"http://schemas.xmlsoap.org/soap/encoding/\">");
      oBuffer.append("<n:getTemp><zipcode xsi:type=\"xs:string\">");
      oBuffer.append(this.zipcode);
      oBuffer.append("</zipcode></n:getTemp></soap:Body></soap:Envelope>");
      
      return oBuffer.toString();
  };
  
  TemperatureService.prototype.handleResponse = function (sResponse) {
      var oRE = /<return .*?>(.*)<\/return>/gi;
      oRE.test(sResponse);
      return parseFloat(RegExp["$1"]);
  };
  
  TemperatureService.prototype.webServiceSend = TemperatureService.prototype.send;
  TemperatureService.prototype.send = function (sZipcode) {
          this.zipcode = sZipcode;
          return this.webServiceSend();
  };