title: $.post fails with error "...is not a function"
body: <p>Here is my code:</p>
  
  <pre><code>var jqxhr = $.post("mypage.php", {url:pageurl}, function() {
        alert("fetching...");
  })
  .success(function() { alert("fetch complete!"); })
  .error(function() { alert("error!"); })
  .complete(function() { alert("complete"); });
  
  // Set another completion function for the request above
  jqxhr.complete(function(){ alert("second complete"); });
  </code></pre>
  
  <p>I get the alert("Fetching...") dialog box, but the rest of the code does not complete. I get the error: Error: $.post("sec_fetch_report.php", function () {alert("fetching...");}).success is not a function</p>
  
  <p>I thought maybe I might be missing the jquery libs, but I have another function that calls $.post and it runs just fine. Is there a syntax error I'm missing somewhere or what?
  Thanks</p>