Event handler on the client JavaScript may contain 3 parameters.
1st parameter contains reference to the WebCalendarView object
2nd parameter contains reference to the ig_EventObject object
3rd parameter is visible date
This event can be canceled by "oEvent.cancel = true;".
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2