title: jQuery datatables optimization in IE, 96.7% of time spent in offsetWidth
body: <p>I have a fairly large table rendered using <code>datatables.net 1.9.4</code> and <code>jQuery</code>.  I'm pulling the data <code>asynchronously</code>, and then setting <code>aaData</code> and <code>aoColumns</code> in the datatable initialization. </p>
  
  <p>While it displays almost instantly in <code>Chrome</code>, in <code>IE9</code>, it takes 6 minutes to display.</p>
  
  <p><code>IE's</code> profiler says that 96.7% of time is spent in the <code>offsetWidth</code> function.  Where is <code>offsetWidth</code> and when is it called?  I can't find a function by that name.</p>
  
  <p>Here are my initialization options:</p>
  
  <pre><code>aaData: data.Values,
  aoColumns: data.Headers,
  bProcessing: true,
  bDeferRender: true,
  bDestroy: true,
  bFilter: false,
  bPaginate: false,
  bSort: false,
  sScrollY: fnCalcDataTableHeight(690),
  sScrollX: "100%",
  bScrollCollapse: true,
  bInfo: false,
  </code></pre>
  
  <p>I also have sole <code>aoColumnDefs</code>.</p>
  
  <p>Thank you.</p>