I have a table of data that I need to dynamically add a column to. Lets say I have this basic table to start with:

<table>
 <tr><td>cell 1</td><td>cell 2</td><td>cell 3</td></tr>
 <tr><td>cell 1</td><td>cell 2</td><td>cell 3</td></tr>
 <tr><td>cell 1</td><td>cell 2</td><td>cell 3</td></tr>
</table>

I would like to insert a column between cell 1 and cell 2 in each row... I've tried this but it just isn't working like I expect... maybe I need more caffeine.

$(document).ready(function(){
 $('table').find('tr').each(function(){
  $(this).prepend('<td>cell 1a</td>');
 })
})