Tokyo stocks ended mixed Friday in a tug-of-war between bargain-hunting in bank and other oversold stocks, and selling on weakened sentiment following pullbacks on Wall Street overnight. The 225-issue Nikkei Stock Average ended down 132.88 points, or 0.34 percent, from Thursday at 38,787.38. The broader Topix index finished 8.08 points, or 0.30 percent, higher at 2,745.62. On the top-tier Prime Market, gainers were led by bank, electric power and gas, and transportation equipment shares. The main decliners were precision instrument, miscellaneous product, and chemical issues. The U.S. dollar r…