Registers namespace prefixes of document (recursively) or
element (non-recursive) to given target element. If target element is unset
it falls back to the documentElement (of ownerDocument, if element is
given).
Parameters
documentOrElement: Element|Document
the document to analyze recursively or the element
to analyze non-recursively.
OptionaltargetElement: Element
the element, that shall receive the prefixed namespace
declarations; defaults applied according to description.
Registers namespace prefixes of document (recursively) or element (non-recursive) to given target element. If target element is unset it falls back to the
documentElement(ofownerDocument, if element is given).