Calendar and Reminder Widget

We need a simple calendar widget exactly like this one [login to view URL] Saturdays, Sundays and Holidays might have different colors (configurable). Normal color might be configurable too. A list of holidays might be configurable using a XML file. When is a holiday and the mouse is over the widget it might show some description about the holiday (from the XML file) It should work as a reminder too. We want pass some information in the URL, so It would ignore the actual date and time, and would display the forced day and descriptions. So the parameters would be: day color description title time xdimension (ydimension would continue proportional) We have a initial source code to help in this task. ps: source code must be delivered too