(no version information, might be only in CVS)
DOMNode->insertBefore() --
Adds a new child before a reference node
Descripción
class
DOMNode {
DOMNode
insertBefore ( DOMNode newnode [, DOMNode refnode] )
}
This function inserts a new node right before the reference node.
If you plan to do further modifications on the appended child you must use
the returned node.