Tokyo stocks surged 1.95 percent Friday to close at their highest level in six months, boosted by a weaker yen and hopes the US Federal Reserve will maintain its easy-money policy. The benchmark Nikkei 225 index added 289.51 points to 15,165.92, the best finish since hitting a five-year high in late May. The Topix index of all first-section issues was up 1.68 percent, or 20.49 points, at 1,239.04.