YUI recommends YUI 3.
YUI 2 has been deprecated since 2011. This site acts as an archive for files and documentation.
The CalendarGroup control is a specialized version of the Calendar control which allows you to display multiple months (pages) together. This example demonstrates how the set up a CalendarGroup control which displays three months at a time.
The code is very similar to that used to setup a basic Calendar and in general, all of the Calendar examples can be applied to a CalendarGroup also.