GLOBAL MARKETS-Dollar hits six-year peak vs yen, stocks rally

* Dollar, stocks rise on differing rate views * S&P 500, Dow hit fresh closing record highs * Crude oil prices pressured by rising dollar (Adds close of U.S. markets) By Herbert Lash NEW YORK, Sept 18 (Reuters) - Investors focused on an increase in the Federal Reserve's interest rate forecast boosted the dollar to a more than six-year peak against the yen, while global equity markets rallied and the Dow and S&P 500 set fresh record highs on the Fed's unchanged timeline for even