title: Datatables : disable first next previous last and show / search record when processing
body: <p>I am using Datatables 1.9 version</p>
  
  <pre><code>var oTable = $('#example').dataTable( {
          "oLanguage": {"sSearch": "Search all columns:",
                        "sLengthMenu": "Display &lt;select&gt;&lt;option value='100'&gt;100&lt;/option&gt;&lt;option value='200'&gt;200&lt;/option&gt;&lt;/select&gt; records per page"
                       },
          "sPaginationType": "full_numbers",
          "bAutoWidth": false,
          "iDisplayStart": 0,
          "iDisplayLength": 2000,
          "bFilter": true,
          "bInfo": true,
          "bSort": true,
          "sScrollX": "100%",
          "sScrollY": "500px",
          "bScrollCollapse": true,
          "bPaginate": true,
          "bSortClasses": true,
          "bLengthChange": true,
          "bProcessing": true,
          "bDestroy": true,
          "bServerSide": true,
          "bDeferRender": true,
          "fnServerParams": function ( aoData ) {
                  aoData.push( { "name": "form_data", "value": data } );
          },
          "sAjaxSource": "search.py",
          "fnServerData": function ( sSource, aoData, fnCallback ) {
                  $.ajax( {
                                  "dataType": 'json',
                                  "type": "POST",
                                  "url": sSource,
                                  "data": aoData,
                                  "success": function (json)
                                  {
                                          fnCallback(json);
                                          $('html, body').animate({scrollTop:$(document).height()}, 'slow');
                                          document.getElementById("bottom").focus();
                                  },
                                  "error": function (xhr, error, thrown) {
                                          alert("An Error Occurred.!");
                                  }
                  });
  </code></pre>
  
  <p>The issue is that when I run the search and datatables renders "Processing ..." text the "Show .. Search" and first next previous and last button also gets displayed. Is there a way that I defer there display when datatabales has processed or received response from backend.</p>