DOMNode->lookupNamespaceURI()
DOMNode->lookupNamespaceURI() -- 
   Gets the namespace URI of the node based on the prefix
  
Description
class 
DOMNode { 
string 
lookupNamespaceURI ( string prefix )
}
   Gets the namespace URI of the node based on the 
   prefix.
  
Parameters
   
- prefix
- 
       The prefix of the namespace.
       
Return Values
   The namespace URI of the node.