The Coolest DHTML Calendar is a DHTML calendar
widget that works with IE >= 5.0, Mozilla,
Netscape >= 6, all other Gecko-based browsers,
Opera 7, Konqueror, and Safari. It comes with
eight color themes, and doesn't use frames or
external windows, but uses Web standards and is
lightning fast. Keyboard navigation is allowed,
and it can optionally show a time selector.