jquery is not working on master page in asp.net

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C#

Javascript

C#4.0

jQuery

, +

i have below code on my master page for autocomplte text box in master page in header tag

<script src='<%=Page.ResolveUrl("~http://code.jquery.com/jquery-1.9.1.js")%>'></script>

  <script src='<%=Page.ResolveUrl("~http://code.jquery.com/ui/1.10.3/jquery-ui.js") %>'></script>
   <link rel="stylesheet" href='<%=Page.ResolveUrl("http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css")%>' />


  <link rel="stylesheet" href="/resources/demos/style.css" />

  <script>

      $(function () {

          var availableTags = [

      "ActionScript",

      "AppleScript",

      "Asp",

      "BASIC",

      "C",

      "C++",

      "Clojure",

      "COBOL",

      "ColdFusion",

      "Erlang",

      "Fortran",

      "Groovy",

      "Haskell",

      "Java",

      "JavaScript",

      "Lisp",

      "Perl",

      "PHP",

      "Python",

      "Ruby",

      "Scala",

      "Scheme"

    ];

          $("#tags").autocomplete({

              source: availableTags

          });

      });

  </script>

and this is my body code

<
<asp:TextBox ID="tags" runat="server" Height="20px" style="padding-top: 0px" 
            Width="313px"></asp:TextBox>
asp:ImageButton ID="searchimg_btn" runat="server" Height="26px" Width="86px"
                   ImageUrl="~/Images/search.jpg" onclick="searchimg_btn_Click" />

this code is running well in simple aspx page but this is not working on master page