jQuery UI Table Sorter error

jQuery UI Table Sorter error


I have look at the demo and i don't see anything wrong with my code
http://www.kaizendigital.com/codereck/index_jquery.php
I am going through all the jQuery UI stuff that i might want to use
and i can't get the table sorter to work. i am not getting any error,
i run .tablesorter() on the table by id but nothing happens.