# File rexml/functions.rb, line 84
    def Functions::get_namespace( node_set = nil )
      if node_set == nil
	yield @@node if @@node.kind_of? Namespace
      else	
	return "" unless node_set.kind_of? Enumerable
	node = node_set.find{|node| node.kind_of? Namespace}
	return "" unless node
	yield node
      end
    end