var bXmlHttpSupport = (typeof XMLHttpRequest == "object" || window.ActiveXObject);
  
  function httpPost(sURL, sParams) {
                         
      var oURL = new java.net.URL(sURL);
      var oConnection = oURL.openConnection();
  
      oConnection.setDoInput(true);
      oConnection.setDoOutput(true);
      oConnection.setUseCaches(false);                
      oConnection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");                
  
      var oOutput = new java.io.DataOutputStream(oConnection.getOutputStream());
      oOutput.writeBytes(sParams);
      oOutput.flush();
      oOutput.close();
  
      var sLine = "", sResponseText = "";
  
      var oInput = new java.io.DataInputStream(oConnection.getInputStream());                                
      sLine = oInput.readLine();
      
      while (sLine != null){                                
          sResponseText += sLine + "\n";
          sLine = oInput.readLine();
      }
                                    
      oInput.close();                                  
  
      return sResponseText;                         
  }
  
  function addPostParam(sParams, sParamName, sParamValue) {
      if (sParams.length > 0) {
          sParams += "&";
      }
      return sParams + encodeURIComponent(sParamName) + "=" 
                     + encodeURIComponent(sParamValue);
  }
  
  function addURLParam(sURL, sParamName, sParamValue) {
      sURL += (sURL.indexOf("?") == -1 ? "?" : "&");
      sURL += encodeURIComponent(sParamName) + "=" + encodeURIComponent(sParamValue);
      return sURL;   
  }
  
  function httpGet(sURL) {
      var sResponseText = "";
      var oURL = new java.net.URL(sURL);
      var oStream = oURL.openStream();
      var oReader = new java.io.BufferedReader(new java.io.InputStreamReader(oStream));
      
      var sLine = oReader.readLine();
      while (sLine != null) {
          sResponseText += sLine + "\n";
          sLine = oReader.readLine();
      }
      
      oReader.close();
      return sResponseText;
  }
  
  if (typeof XMLHttpRequest == "undefined" && window.ActiveXObject) {
  
      function XMLHttpRequest() {
  
          var arrSignatures = ["MSXML2.XMLHTTP.5.0", "MSXML2.XMLHTTP.4.0",
                               "MSXML2.XMLHTTP.3.0", "MSXML2.XMLHTTP",
                               "Microsoft.XMLHTTP"];
                           
          for (var i=0; i < arrSignatures.length; i++) {
              try {
          
                  var oRequest = new ActiveXObject(arrSignatures[i]);
              
                  return oRequest;
          
              } catch (oError) {
                  //ignore
              }
          }          
  
          throw new Error("MSXML is not installed on your system.");               
      }
  }
  
  var Http = new Object;
  
  Http.get = function (sURL, fnCallback) {
   
      if (bXmlHttpSupport) {
     
          var oRequest = new XMLHttpRequest();
          oRequest.open("get", sURL, true);
          oRequest.onreadystatechange = function () {
              if (oRequest.readyState == 4) {
                  fnCallback(oRequest.responseText);
              }
          }
          oRequest.send(null);    
      
      } else if (navigator.javaEnabled() && typeof java != "undefined" 
              && typeof java.net != "undefined") {
              
          setTimeout(function () {
              fnCallback(httpGet(sURL));
          }, 10);
      } else {
          alert("Your browser doesn't support HTTP requests.");
      }          
  
  };
  
  Http.post = function (sURL, sParams, fnCallback) {
   
      if (bXmlHttpSupport) {
     
          var oRequest = new XMLHttpRequest();
          oRequest.open("post", sURL, true);
          oRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
          oRequest.onreadystatechange = function () {
              if (oRequest.readyState == 4) {
                  fnCallback(oRequest.responseText);
              }
          }
          oRequest.send(sParams);    
      
      } else if (navigator.javaEnabled() && typeof java != "undefined" 
              && typeof java.net != "undefined") {
              
          setTimeout(function () {
              fnCallback(httpPost(sURL, sParams));
          }, 10);
      } else {
          alert("Your browser doesn't support HTTP requests.");
      }          
  
  };