nodeInsertBeforeNodeAncestor
NIST
The "insertBefore(newChild,refChild)" method raises a
HIERARCHY_REQUEST_ERR DOMException if the node to be
inserted is one of this nodes ancestors.
Retrieve the second employee and attempt to insert a
node that is one of its ancestors(root node). An
attempt to insert such a node should raise the
desired exception.
Mary Brady
2001-08-17