On Friday, Nifty opening may depend on Global clues. On Wednesday, Nifty showed selling pressure at the opening, but showed good strength from lower levels and made a hammer on daily chart. Hammer after a Doji represent basing formation at lower levels. Friday being the last trading day of the week, so volatility may continue. For the daily purpose trend deciding level is 3490. If Nifty shows strength above 3490 with good volumes then we may see a rally upto 3550/3595/3625 Upside crossover may take it to 3650/3695/3725. On the other hand, if Nifty doesn't sustain above 3490, then we may see a decline to 3460/3425. Downside crossover may take it to 3395/3345/3325.