<script>
        var timer = null;
        // Function that retrieves a JSON object and puts the information
        // into the div with an id of 'json-content'. Notice how we're defining
        // 'handleAs' to be of type 'text'. We we handle the parsing of the JSON
        // data so that we can trap the exception if it occurs.
        function getJson () {
            
            var d = dojo.xhrGet ({
                                  url:      '/webseal/login',
                                  handleAs: 'text', 
                                  load:     loadIntoNode,
                                  error:    errorCondition              
                                 });
        };


          function loadIntoNode(data, ioArgs){              
            try{
                console.log("Read JSON Data ... do something",data);
				
		// read the JSON data that was returned by the service 
                var jsonData = dojo.fromJson(data);

                console.log(jsonData.attribute);
                console.log(jsonData.number);
		
                //do something with the JSON data that you read
		//dojo.byId("json-content").innerHTML = data;

            }catch(e)
            {
                // respond with an error reading JSON.  As an example, if an HTML form login is returned, then dojo.fromJson 
                // will throw an Exception.  Catch the exception and dispaly a login box. At this point, we are assuming the 
                // error condition is because Dojo can't parse the JSON stream. You can fine tune the error condition by 
                // looking at the e.message value
		console.log("error reading json data ",e.message);
                
                // Do something on the error condition, display a login widget, or look at the ioArgs to further narrow
                // the problem down.
                 
          }

          function errorCondition(error,ioArgs){

           console.log("Status",ioArgs.xhr.status);
              
            // retrieve an error message for the HTTP response code.  As an example, if we get a 500 
	    // (Server Error) then take an action.

            switch(ioArgs.xhr.status) {
            case 404: //page not found error
                      break;
            case 500: // server side error
                      break;
            case 407: // proxy authentication
                      break;
            default: // default action
            };

            console.log("HTTP Error code:",ioArgs.xhr.status);
            console.log("Error Condition:",error.responseText);
	    console.log("Error Message:  ",error.message);

            //dojo.byId("json-content").innerHTML = ioArgs.xhr.status;
                       
          };       
        
</script>