dhtmlxCalendar is an easy-to-use and fully customizable JavaScript calendar which can be configured as a popup DatePicker or a flat calendar. The component features cross-browser compatibility, features custom date format, any day as the first day of week, year drop down list, various skins and languages.
The calendar can be attached to any text input field and provide fast and intuitive date selection. It also can be used as a date range selection tool in double month mode, in that case dates prior/after selected date will be disabled accordingly.
Main new features
* ability to attach calendar to multiple input boxes
* improved performance
* new library skin
* bug fixes and enhancements