Reply To: how to dynamically hide or reveal tables rows as needed

[dyr]

Here’s working code for you:
http://codepen.io/shawkdsn/pen/bGtou

You’ve got validation errors in your HTML. CodePEN will tell you these if you click the gear icon next to ‘HTML’ and click “Analyze HTML.” Here’s what it says:

ALL HTML ERRORS:

The font element is obsolete and should not be used.
The ‘align’ attribute is no longer valid on the div element and should not be used.
‘colspan’ is not a valid attribute of the div element.
The id ‘Comments’ appears more than once in the document.