tablesorter addParser sorts in only one direction

tablesorter addParser sorts in only one direction

Hi, 


I'm using jquery.js version 1.4 and the current version of jquery.tablesorter.js. I added a parser following the example at http://tablesorter.com/docs/example-parsers.html.


When the custom parser is not present, clicking on any of the headers will sort the table in both directions: up and down.


When the custom parser is present, clicking on any of the headers will sort the table in only one direction: up. I can't figure out why and would appreciate any suggestions.


See http://www.wanakee.org/summerschedule2010.shtml for the page I'm working on.


Thanks,

Cam