datatable tools not work -

i want export data of datatable.but tools doesn't work script :

<link rel="stylesheet" type="text/css" href="http://www.datatables.net/release-datatables/media/css/jquery.datatables.css">     <link rel="stylesheet" type="text/css" href="http://www.datatables.net/release-datatables/extensions/tabletools/css/datatables.tabletools.css">  <script src="http://www.datatables.net/release-datatables/media/js/jquery.js"></script> <script src="http://www.datatables.net/release-datatables/media/js/jquery.datatables.js"></script>   <script src="http://www.datatables.net/release-datatables/extensions/tabletools/js/datatables.tabletools.js"></script>   <script> $(document).ready(function() {     $('#example').datatable( {         dom: 't<"clear">lfrtip',         tabletools: {              "sswfpath":"http://cdn.datatables.net/tabletools/2.2.2/swf/copy_csv_xls_pdf.swf"         }     } ); } ); </script>