JustCal stands for JavaScript Ultimate Slick Tiny CALendar (date-time picker).
It is standalone draggable multilingual calendar widget - date and time picker.
It is easy to use, simple yet powerful and highly configurable date-time picker with seconds, AM-PM and keyboard support, and wide-range format of input/output date/time values.
It requires no extra files - no JavaScript libraries, no any css or image files, it works just out of the box.