# File rexml/functions.rb, line 62
  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