The client object model contains the Xrm.Internal namespace. Use of the objects in this namespace isn’t supported. These objects, and any parts of the HTML Document Object Model (DOM), are subject to change without notice. We recommend that you don’t use these functions or any script that depends on the DOM.
While debugging, you may find methods and objects in the Xrm.Page or Xrm.Utility namespaces that aren’t documented. Only documented objects, functions, and methods are supported.