private Hashtable addNamespace(String namespace){
  Hashtable h=new Hashtable();
  Object oh;
  if ((oh=namespaceHash.put(namespace,h)) != null) {
    namespaceHash.put(namespace,oh);
    return null;
  }
  return h;
}

private Hashtable addNamespace ( String namespace ) { Hashtable h = new Hashtable ( ) ; Object oh ; if ( ( oh = namespaceHash . put ( namespace , h ) ) != null ) { namespaceHash . put ( namespace , oh ) ; return null ; } return h ; }
adds a namespace to the namespaces
