As I was trying to call javascript during the callback of DayPilotMonth1_EventMove in every imaginable way possible and failing each time. The point of it is to open a popup to set some details of the move (its a request for day switching). I am trying to work around that to accomplish the same thing. So I was wondering if it is possible that EventMoveHandling can be handled by javascript. If so, how to I call my JS function "function eventMove(OldStart,NewEnd)"? When I tried "OnEventMoveHandlingJavaScript="eventMove(OldStart, NewEnd);" i get a popup saying "event with id x moved"...which tells me its calling SOMETHING but i dont know what in order to manipulate it. Thank you in advance!