nodeAppendChildChildExists
NIST
If the "newChild" is already in the tree, it is first
removed before the new one is appended.
Retrieve the first child of the second employee and
append the first child to the end of the list. After
the "appendChild(newChild)" method is invoked the first
child should be the one that was second and the last
child should be the one that was first.
Mary Brady
2001-08-17