Sortable columns upon click

I have created a report in Pentaho Report Designer 3.9.0 with several columns that I would like to make interactive allowing the user to sort the results upon their click. From the tutorials I have found I believe that you include your javascript code in the apend-body section of the Master Report and then specify your class name for every attribute you wish to allow the interactive sort by functionality but it's not working correctly I'm unable to find resources on how to do this. The javascript library (sorttable) that I'm attempting to use can be found under the link below. Your help is greatly appreciated.

http://www.kryogenix.org/code/browser/sorttable/