jQuery doesn't work

jQuery doesn't work

Hi, I've got a problem, i'm using jQuery but it doesn't work and I don't know why, 

here is my code

  1. <head>

  3. <script  src="prototype.js" type="text/javascript"></script>
  4. <script  src="jquery.js" type="text/javascript"></script>
  5. <script src="jquery.dataTables.js" type="text/javascript" ></script>
  6.     <script type="text/javascript">
  7.      jQuery.noConflict();
  8.     jQuery(document).ready(function() {
  9. alert('document ready');
  10. CreateTable();
  11. });
  12. function CreateTable(){
  13. var oTable = jQuery('#example').dataTable({
  14.    "bPaginate":true,
  15.    "iDisplayLength": 50 ,
  16.    "bLengthChange": false,
  17.    "bFilter": false,
  18.    "sPaginationType": "full_numbers",
  19.    "bAutoWidth": false,
  20.    "aoColumns": [
  21.        {sWidth: '20px'},
  22.        {sWidth: '20px'},
  23.        {sWidth: '30px'},
  24.        {sWidth: '50px'},
  25.        {sWidth: '50px'},
  26.    ],
  27.    "oLanguage": {
  28. "sLengthMenu": "Mostrar _MENU_ rexistros por paxina",
  29. "sZeroRecords": "Non existen rexistros",
  30. "sInfo": "Mostrar de _START_ a _END_ de _TOTAL_ rexistros",
  31. "sInfoEmtpy": "Mostrar de 0 a 0 a 0 registros",
  32. "sInfoFiltered": "(filtrado de _MAX_ rexistros totais)",
  33. "sSearch": "Procurar" ,
  34. "oPaginate":{
  35. "sNext": "Seguinte",
  36. "sFirst": "Primeiro",
  37. "sPrevious":"Anterior",
  38. "sLast":"Ultimo"
  39. }
  40. }

  42.     

  44. });
  45. }
  46. </script>
I got my .js's in the same directory as my jspx file, and the alert ('document ready') is never shown.

Any ideas ?????

Thanks