Having issues with Facebook notifications, help please?

[I luv culture]

For one thing.. sometimes I can't see the top of the notification list on the Facebook bar.. for some reason it just keeps going higher off the top of the browser window part so if there's any new ones I have no idea what they are! I don't know any other way of viewing them either without being able to reach the top part of it.. and right now I keep having the alert even though I've been clicking the notification button each time and it still shows up on the next page I go on.. Anyone know a solution to this? I'm using Firefox 3.5.5. It's just so frustruating wanting to see what the alert's about when I can't see it and not every notification is sent to my email..