title: codeigniter 2.0 and ajax
body: <p>I just want to store a variable from jQuery into a session.</p>
  
  <p>js file:</p>
  
  <pre><code>$.post("controller/ajaxtest","hello");
  </code></pre>
  
  <p>I am able to see this post request in firebug.  How can I access this variable or store it in the session?</p>