Calandar Script

I need a calandar where people will be able to book 1 hour time slots throughout the day. The timeslots will be in hour intervals from 9am to 9pm. Individuals will be able to book a single time slot or multiple timeslots. The script should have the following features: User Signup ================================= Users have to sign up before they can book a timeslot. Once registered they can book the timeslots they require. They must pay a deposit before the timeslot is fully reserved. Admin Section ================================= - show booked timeslots - manually book timeslots An example of what i am looking for can be found at: [login to view URL]