title: JQuery Calcuation - sum all the textboxes in a table column
body: <p>I want to write a selector that gets me all the textboxes in a table column.  So I can use this with Jquery Calculation to get a 'sum' box.  I've written something based off this: <a href="https://stackoverflow.com/questions/494362/highlighting-columns-in-a-table-with-jquery">Highlighting columns in a table with jQuery</a></p>
  
  <p>Here's how far I've got: <a href="http://jsfiddle.net/Px78h/1/" rel="nofollow noreferrer">http://jsfiddle.net/Px78h/1/</a></p>
  
  <p>The page loads, and I see my totals in the <code>totalSum</code> box.  But updating any of the textboxes in the column seems to cause it to sum ALL the textboxes.</p>
  
  <p>Am I doing something wrong?</p>
  
  <p><strong>Update</strong>: here's the 'end game' of what I was trying to do: <a href="http://jsfiddle.net/Px78h/5/" rel="nofollow noreferrer">http://jsfiddle.net/Px78h/5/</a></p>