plugin for calendar and custom events

[francesco.disciascio]

Hi everybody,
I'm using grails for a web app in which i need to create a calendar. User must to create calendar events, choosing some entities. For example, I need that, when event is created, the user can choose date, time, people involved (listed in a dropdown) etc...
Is there some free plugin or component useful for my goal??

Thanks for your help

Regards

Francesco

[dave]

I have a similar requirement which I will be tackling soon, I've been looking at javascript libraries to handle the calendar, such as jCalendar.