I can pick and drag the calendar in all major browsers except for FireFox, so it is obvious that the PickIt, DragIt and DropIt routines need a brush up.
If you study the example from W3Schools.com (
http://www.w3schools.com/dhtml/tryit.asp?filename=trydhtml_move) you will find a very simple routine that works in all browsers. So I've tried to replace the routines in DateTimePicker_css.js but to no avail. (Seems as PickIt routine must run once to display the calendar).
Anyone or perhaps mr. TengYong Ng himself who wants to (help me) fix this bug?