zoomChanged = function (
   event
Object that contains information about event. Object has the following properties:
 
 
target (object): An object that raised the event.
 
type (string): Event name.
 
data (object): An object that contains data, which were specified when subscribing to the event.
 
originalEvent (object): Original event if event was received from DOM-element.
 
 : object
   eventsArgs
Object that contains event arguments. Object has the following properties:
 
 
zoom (number): New zoom.
 
differenceScale (object): Ratio between old and new zoom.
 
scroll (object): Position of scrollbars.
 
 : object
) { };