if (container.containsKey(fName)) {
container.remove(fName);
}
container.put(fName, args);
if (listener != null) {
ContainerEvent event = new ContainerEvent();
event.Element = fName;
for (int i=0; i<listener.length; i++){
if (listener[i] != null) {
listener[i].elementInserted(event);
}