title: oTable.fnFilter is not working
body: <p>I want to provide search in <code>thead</code> of datatables and implement search in it...but it is not working...</p>
  
  <pre><code>$("#listings_row thead input").keyup( function () {
      oTable.fnFilter( this.value, $(this).attr('id') );
  } );
  
  &lt;thead style="background:none;border:none;" id="searchbox"&gt;
      &lt;tr class="search_box"&gt;
          &lt;th&gt;&lt;input type="text" style="height:16px;" name="search_engine" value="Search engines"   class="search_init" id="1" /&gt;&lt;/th&gt;
      &lt;/tr&gt;
  &lt;/thead&gt;
  </code></pre>
  
  <p><a href="http://jsfiddle.net/methew/u9654/3/" rel="nofollow">http://jsfiddle.net/methew/u9654/3/</a></p>
  
  <p>only this line is not working properly ...oTable.fnFilter( this.value, $(this).attr('id') );</p>