title: Enable search for hidden columns in jqGrid
body: <p>I have bunch of hidden columns in my jqGrid, on which I want to enable search,</p>
  
  <p>eg.</p>
  
  <pre class="lang-js prettyprint-override"><code>{ name: 'Col1', width: 200, hidden: true, search: true },
  { name: 'Col2', width: 200, hidden: true, search: true },
  { name: 'Col3', width: 200, hidden: true, search: true }
  </code></pre>
  
  <p>But this columns not displaying search popup.</p>
  
  <p>Can anybody help ?</p>