Rails spinoffs - Jul 2006 - Ajax.Responders

I''m using....
Ajax.Responders.register({
        onCreate: function() {
                if($(''spinner'') &&
Ajax.activeRequestCount> 0)
                        Effect.Appear(''spinner'',{duration:
0.25, queue:
''end''});
        },
        onComplete: function() {
                if($(''spinner'') &&
Ajax.activeRequestCount == 0)
                        Effect.Fade(''spinner'',{duration: 0.25,
queue:
''end''});
        }
});

How to know what is the activeRequests? I dont know how they are named 
but there is a way to know the
requests that are not finished?

it''s because there are some requests that is not completing...

tks