title: Uncaught TypeError: $(...).tabs is not a function
body: <p>I think there is a strange problem with jquery I got this exception when page load 
  here is my markup :</p>
  
  <pre><code>&lt;asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server"&gt;
  &lt;link href="../Layouts/en-us/css/custom.css" rel="stylesheet" /&gt;
  
  &lt;link href="../Layouts/en-us/css/jquery-ui.css" rel="stylesheet" /&gt;
  
  
  
  &lt;script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"&gt;&lt;/script&gt;
  
  &lt;script src="../ckeditor/ckeditor.js"&gt;&lt;/script&gt;
  &lt;script src="../ckeditor/adapters/jquery.js"&gt;&lt;/script&gt;
  &lt;script src="/Layouts/en-us/js/jquery-ui.min.js"&gt;&lt;/script&gt;
  &lt;/asp:Content&gt;
  </code></pre>
  
  <p>here is the function that causes error </p>
  
  <pre><code>$(function () {
      $("#tabs").tabs();
  
      if ($("#ListBoxPages").val() == null) {
          $("#tabs").css("display", "none");
      }
  
      $("#ListBoxPages").change(function () {
          $("#tabs").css("display", "block");
      });
  
  });
  </code></pre>
  
  <p>All relative paths to Layouts and jquery were copied from another markup which works pretty fine with no error </p>