I want someone to build me a php based Ultrasound Calendar that will identify the best days for an expecting mother to get her ultrasound done. I want it built very similar to this one: [url removed, login to view]
Except that I need you to also be able to reverse engineer this calendar to find out which days are the best to be used based on what day was selected. So I need you to figure out how that above calendar works, and make me a new one.
Time frame is very important.