nodeinsertbefore12
IBM
The method insertBefore inserts the node newChild before the existing child node refChild.
If refChild is null, insert newChild at the end of the list of children.
Using insertBefore on a DocumentFragment node attempt to insert a new DocumentFragment node
before this DocumentFragment's Element node and verify the last child is still the only child
appended to docFrag.
Neil Delima
2002-06-10