title: Appending to JSON notation?
body: <p>I have the following JSON object: </p>
  
  <pre><code>new Ajax.Request(url, {
     method: 'post',
     contentType: "application/x-www-form-urlencoded",
     parameters: {
            "javax.faces.ViewState": encodedViewState,
            "client-id": options._clientId,
            "component-value": options._componentValue
     }
  });
  </code></pre>
  
  <p>Now, I would like to be able to append to the "Parameters" object programattically, but I am unsure of how I would actually do this. </p>