code: protected void compareNodeChildren(Node control, Node test,
                                         DifferenceListener listener, ElementQualifier elementQualifier) 
          throws DifferenceFoundException {
  
          List<Node> controlChildren = nodeList2List(control.getChildNodes());
          List<Node> testChildren = nodeList2List(test.getChildNodes());
  
          Integer controlLength = new Integer(controlChildren.size());
          Integer testLength = new Integer(testChildren.size());
          compare(controlLength, testLength, control, test, listener,
                  CHILD_NODELIST_LENGTH);
  
          if (control.hasChildNodes() || test.hasChildNodes()) {
              if (!control.hasChildNodes()) {
                  for (Node aTestChildren : testChildren) {
                      missingNode(null, aTestChildren, listener);
                  }
              } else if (!test.hasChildNodes()) {
                  for (Node aControlChildren : controlChildren) {
                      missingNode(aControlChildren, null, listener);
                  }
               } else {
                  compareNodeList(controlChildren, testChildren,
                                  controlLength.intValue(), listener, elementQualifier);
              }
          }
      }
docs: Compare the number of children, and if the same, compare the actual
  children via their NodeLists.
  @param control
  @param test
  @param listener
  @param elementQualifier
  @throws DifferenceFoundException