When the Calendar control is rendered, you can completely customize the HTML that is shown for each date in the Calendar by writing your own event handler for the Calendar's special "onItemDraw" event. In these videos, we show how we use this event to display the orders that were received on each day of the month.
The videos show how to make an Ajax callback to a SQL database to get the orders for each month as the user navigates from month to month. The orders are then shown in the appropriate date on the Calendar.
Finally, we show how to open event details in a popup window.