title: Test Json does not work
body: <p>I'm a beginner with Json, I follow this <a href="http://www.webmonkey.com/2010/02/get_started_with_json/" rel="nofollow">tutorial</a>
  the example I have written is based on the tutorial, but I do not understand it does not work :</p>
  
  <pre><code>&lt;script language="javascript"&gt;
  var Jtext="{"variables":["var1","var2","var3"]}";
  var Jobj=eval("(" + Jtext + ")");
  var j=Jobj["variables"];
  document.write(j[0]);
  &lt;/script&gt;
  </code></pre>
  
  <p>Any helps...</p>