private static Document getDummyDocument( ) {
// we don't need synchronization here; even if two threads
// enter this code at the same time, we just waste a little time
if(d==null) {
DOMImplementation dim = getParser().getDOMImplementation();
d = dim.createDocument("http://java.sun.com/jaxp/xpath",
"dummyroot", null);
}
return d;
}