Adding a calendar?

Hi guys,

I am trying to find a calendar that will suitable for adding to my clients website. They own a chalet in a ski resort and they would like to maintain a calendar themselves that shows the dates when the chalet is booked/available. It is vital that the calendar is easy to maintain from the client side, perhaps with a password protected control panel, so I was wondering if anyone knows of any decent systems out there that i could use? Preferably the system can be customized in terms of font and colour schemes etc. Any ideas? thanks
Stefan

Here's one that I've used. I don't know much about it because I just took this client over but the client loves it. http://freecal.brownbearsw.com/