title: Find the column Sum of table using jquery
body: <p>I am new to this forum. I need to get the product of rows and sum of columns.Row product is ok now.but it seems very difficult to find the column sum
  Here is the LInk
  <a href="http://jsfiddle.net/Mpayr/10/" rel="nofollow">http://jsfiddle.net/Mpayr/10/</a>
  Please help me to solve this??</p>