title: Microsoft JScript runtime error: JSON.stringify when I pass a jobject as json to jquery
body: <p>First of all to point out that I'm new with javascript and web services and  i try to find out what is really going on some days now... I have got a lot of help from the related topics but I still have some questions...</p>
  
  <p>in my test case i try to pass the values of var objuser.
  i found many examples like this but for me doesn't work.</p>
  
  <p>I'm working with IE7</p>
  
  <p>I get the error 
  <strong>"Microsoft JScript runtime error: JSON.stringify"</strong></p>
  
  <pre><code>var objuser ={"companycode": "test1"," usercode": "test2","applicationname":"test3"};
  $.ajax(
  {
      type: "POST",
     url: "localhost:51136/Service2.wsdl/FindByUserAndApplication",
     contentType: "application/json; charset=utf-8",
     data:json.stringify(objuser), 
     //data: objuser, i tried this also but i got the same error 
     datatype: "json",
     success: function (msg) {
                  alert(msg);
              },
      error: function(req, status, error) {
          alert(req + ", " + status + ", " + error);
      } ,
      complete: function(req, status) {
                 alert(req + ", " + status);
              }
  
  });
  </code></pre>
  
  <p>I have allready add the json.js ,json2.js libraries</p>
  
  <p>Thank you in advance for your help!</p>