title: json text needs to wrap in parenthesis. why?
body: <p>if you look at <a href="http://www.json.org/js.html" rel="nofollow">http://www.json.org/js.html</a>
  you will find a line that states: </p>
  
  <blockquote>
    <p>The text must be wrapped in parens to
    avoid tripping on an ambiguity in
    JavaScript's syntax.</p>
    
    <p>var myObject = eval('(' + myJSONtext +
    ')');</p>
  </blockquote>
  
  <p>can some body explain what this ambiguity is ???</p>
  
  <p>Many thanks</p>