I need availability calender module for product catalog on my eCommerce store

I want a functionality of availability calender for my eCommerce rental website, it should be built in Ajax, PHP and mySQL. The basic idea is when someone rents a product (say for 2 days), then that product will be shown as unavailable for other customers in the calender, as it has been already reserved by the previous user. What I need from you: Prepare an availability calender that works according to the values in database. And each product will have a separate availability calender, so each calender should be independent. Please visit the reference site mentioned below to have a better understanding about the job. Reference website: [login to view URL] Thanks Varun Mishra