Usd/maj. - Federal Reserve Chairman Ben Bernanke said a weak job market n low inflation wud likely allow the central bank to keep interest rates at very low levels for 'an extended period'. The greenback fell broadly against major ccys on renewed risk appetites on the rally in U.S. stock markets (Dow Jones index rose by 100 points to 10382). U.S. dollar fell to 89.76 n 1.0738 versus the Japanese yen n Swiss franc. The British pound rebounded fm 1.5403 to 1.5473.