Calendar and Sheduler, how to?

[eluser]Référencement Google[/eluser]
Hi,

One of my client that is DJ need that I code for him an availability Scheduler.

He want something really simple, just to show in the public website that he is available or not on a specific date or range of dates. The admin area should be simple too, I can imagine that I can make him select a range of dates or pick a single date on a JS calendar. There is no plan yet to do a reservation depending on available dates, but that's a functionality that can come later.

So my question is:
How would you go for this kind of things with the DB fields / tables, with CI libs,... ? If you have some PHP libs that I can rely my code on, I would be very happy too !

Thanks in advance.