title: jQuery create int Array from string of numbers
body: <p><code>
  &lt;div id="dynamicTable" columns="26,40,41,21,71,39,23,19"&gt;
  </code></p>
  
  <pre>
  var columns = $('#dynamicTable').attr('columns');
  var attributeIds = new Array();
  attributeIds = columns.split(',');
  
  </pre>
  
  <p>This creates an array of strings, I need them to be ints. What's the best way to do this?</p>