root()

Can be redefined to match specifics of your page/application.

Default funtionality:

HATester.prototype.root=function()
{
  return $("body");
};

Re-definition example:

hat.root=function()  {
  if (!pager) return $("body");
  if (!pager.objects.length) return $("body");
  pager.get_html(pager.objects.length-1).parent();
};