employees callendar :)

[eluser]Josssi[/eluser]
Hi people ,

now i need in my application to make callendar for employees. One view on callendar have to contain one week divided on days, and every day has to have 24 selectable parts. I need to every employee could to sign his name in variable times, and save it into database as count of worked hours in each month.

Have you got somebody inspiration for me how to do it ??? Havent you got experiences with something simmilar???