Re: Node.ownerDocument property: always defined?

Yes, much better.  Thanks.

> Possible rewording:
> 
> The Document object associated with this node. For most nodes, this refers
> to the Document whose factory methods created them (and which can be used
> to create other nodes compatable with them). When a node is either a
> Document, or a DocumentType which is has not yet been associated with a
> specific document by the DOMImplementation.createDocument method, its
> ownerDocument is null.
> 
> Better?