void notify(
mixed
$event)
     |   
     | 
	
		This is a stub method to make sure that HTML_Progress_Observer classes do  something when they are notified of a message.  The default behavior  is to just write into a file 'progress_observer.log' in current directory.
You should override this method.
Default events : 
- setMinimum
 - setMaximum
 - setValue
 
	Overridden in child classes as:
		
	- Bar1Observer::notify()
 
		
	
		
	- MyObserver::notify()
 
		
	
	
        Parameters: