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The Ajax Availability Calendar is a php script designed to show availability of whatever you might need it for (eg. holiday cottage, hotel rooms etc.). Free to use on your website or application and is currently being used by hundreds, if not thousands, of websites around the world.

Features
Open Source and FREE to use in your site or aplication
Unlimited Items (holiday homes, apartments etc.).
Unlimited Languages.
Unlimited Booking States (available, booked am, Special Offer etc.).
100% administrable ( see admin panel ).
Multiple administration users.
Styled with CSS - easy to adapt to any design.
Uses AJAX to change months viewed without reloading the page.
Simple integration with booking form.
Simple installation script to help with the calendar setup.
All javascript handled by the Mootools library.