title: Paramer sent into in jsonpCallback function undefined
body: <p>I'm executing this:</p>
  
  <pre><code>$.ajax({
    url: url,
    dataType: 'jsonp',
    jsonpCallback: function (data) { alert("jsonp call-back: " + data); },
    success: function (a, b, c, d) { alert("call ok"); },
    error: function (a, b, c, d) { alert(a.state() + " " + b + " " + c + " " + d); }
  });
  </code></pre>
  
  <p>The problem is that I get <em>data</em> to be <em>undefined</em> in <em>jsonpCallback</em> function. I also noticed that in the console, I've got an error message about a missing semicolon before statement. When I click the link on the right, I see the JSON structure I'm trying to get.</p>
  
  <ol>
  <li>What did I miss in the call?</li>
  <li>How can I get the requested content into my JS code?</li>
  </ol>
  
  <p>The admin claims that the server is exposed as JSON data provider and it's supposed to work. I haven't verified that myself but I have to assume it's so.</p>