"TypeError: parsers[j] is undefined" in tablesorter.js line 302

If you have a table with more table rows than header rows, or use colspan in the table head then it will fail to find a parser, giving us a runtime error.

It'll say "TypeError: parsers[j] is undefined" in tablesorter.js line 302.

JSFiddle demonstrating the issue at: http://jsfiddle.net/antila/N8m8J/1/

This is a very minor issue since it usually means you're doing something wrong with the markup.