Function Document.importNode
Imports a node from another document to this document, without altering or
   removing the source node from the original document; this method creates a
   new copy of the source node. The returned node has no parent; (parentNode is null).
For all nodes, importing a node creates a node object owned by the importing
   document, with attribute values identical to the source node's nodeName and
   nodeType, plus the attributes related to namespaces (prefix, localName,
   and namespaceURI). As in the cloneNode operation, the source node is
   not altered. User data associated to the imported node is not carried over.
   However, if any UserData handlers has been specified along with the associated
   data these handlers will be called with the appropriate parameters before this
   method returns.
Prototype
Authors
Lodovico Giaretta
Copyright
Copyright Lodovico Giaretta 2016 --