Dow crashes badly,Nifty expected to open with a down gap

US markets crashed badly overnight with Dow falling by 280 points to close at 6594.Nasdaq and S&P also had a bad closing.Asian markets are also down with Japan's Nikkei down 2.5% so far.SGX Nifty is down 36 points at 2520,thats where we might open today.The level of 2500 is crucial which we might test today.If we hold that level we might see a technical bounce.Nifty is bullish only above a close of 2690.Till we close below 2611 we continue to be in downtrend.