changing = 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:
 
 
actionName (string): Action name. Supported values: "clear", "insert", "insertRange", "swap", "removeAt", "removeRange", "set".
 
imageIndex (number): Zero-based image index in collection. Property is defined for actions "insert", "insertRange", "removeAt" and "set".
 
imagesIndexes (object): Indexes of images, that must be removed. Property is defined for actions "removeRange" and "swap".
 
image (object): WebImageJS object, which must be inserted/removed/set. Property is defined for actions "insert", "removeAt" and "set".
 
images (object): WebImageJS objects, which must be inserted/removed. Property is defined for actions "insertRange", "swap", "removeRange" and "clear".
 
previousImage (object): Previous WebImageJS object. Property is defined for action "set".
 
 : object
) { };