insert Child
Inserts the given node
before the given beforeNode
as a child of the current node. The new node can be an existing node in the document, or you can create and insert a new node. If the node
is existing node, it will be moved to a new location in the document.
Return
true
if the given node
was successfully inserted
Parameters
node
the node to insert
before Node
the node before which the node
will be inserted
Throws
when this node is closed