Calendar Widget php (NOT the Drupal module. This code snippet is for any site not using drupal.)
Copy and paste the index.html file to where you want the Calendar Widget block display. You may include it multiple times for multiple blocks.
See examples of the different styles available for these calendar blocks: http://calendar.byu.edu/calendar-widget-demo
For more information about how to use this Calendar Widget, see the documentation online: http://calendar.byu.edu/how-use-calendar-widget