ee154bb5_ter_2_0___Sticky_Header_Widget__Description
[Option] stickyHeaders [Default] '' [Description] 
Include any extra class name to be added to the sticky header table (v2.1; v2.18.0) Note prior to v2.18.0, this class was applied to the sticky table thead; after v2.18.0, the thead and caption are wrapped in a div that is made sticky, with this class name. Modified in v2.11 so that "tablesorter-stickyHeader" class is always added and this option only adds additional classes.
jQuery plugin: Tablesorter 2.0 - Sticky Header Widget
Description