title: jqrid - adding cellattr to json colmodel
body: <p>I have been trying to add a <code>cellattr</code> function to my <code>colmodel</code> json response but cannot seem to get it to fire. I have tried adding classes and styles but thought I would try and log 
  something out to see if I could get it to work.</p>
  
  <p>Here is a snippet from my returned json:</p>
  
  <pre><code>{
  "name":"15/09/2012",
  "index":"Sep 2012",
  "align":"center",
  "width":30,
  "frozen":false,
  "sortable":false,
  "cellattr":"function (rowId, tv, rawObject, cm, rdata) { console.log('test'); 
  }
  </code></pre>
  
  <p>Was wondering if anyone had any experience with this and could point me in the right direction?</p>