I'm creating a page to manage the our times at the office (for example when we made home-office). This requires selecting a date and then time-range.
I know about the Date-Picker from jQuery-UI, and there also seems to be something interesting for time picking. But since I need a start and end time, a UI to select date and time range would be perfect. Is there something you could recommend?
Visit jQuery UI datepicker range example and click "view source".
Combine with jquery timepicking solution found here.
That should hopefully get you going in the right direction.
Another interesting option could be handle the date in the date-picker and the time-range with a separated UI component (in this specific case start and end time are in the same day).
You can take a look at these time-range sliders:
http://jsfiddle.net/jrweinb/MQ6VT/
http://marcneuwirth.com/blog/2010/02/21/using-a-jquery-ui-slider-to-select-a-time-range/
You can select time using this slider.