title: Comparing and highlighting table data with jQuery
body: <p>I have table with following structure
  <img src="https://i.stack.imgur.com/uV4Bh.png" alt="enter image description here"></p>
  
  <p>Whenever user click on checkbook and click on link "Compare Diff" table column should highlight if the value is different . Users can select two , once user select two out of three (or more than three)  other row will hide and only comparing rows will be shown.</p>
  
  <p><a href="http://jsbin.com/ufumiv/edit#preview" rel="nofollow noreferrer">Here is the link of the code</a> </p>
  
  <p>Edits:
  How I can add class to colgroup > col if any of the value in that column is diffrent?
  Or
  How can I add class/highlight div of the selected row compared td?</p>