Firefox - this will definitely work. There is a large group of us who go every weekend, some climb, some try the Skyride (assault course suspended from the 30 metre high ceiling), some use the gym and some just sit in the 5th floor restaurant/bar and watch.
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Rory
MkIIa, blue lit buttons, memory upgrade, 1Tb in Subaru Forester STi
MkII, 240Gb in Mark Lord dock
MkII, 80Gb SSD in dock