Nikkei hit a 23-month high point Friday morning as yen\'s weak. At 9:15 a.m., the 225-issue Nikkei Stock Average was up 177.38 points, or 1.67 percent, at 10,830.02. The broader Topix index of all First Section issues on the Tokyo Stock Exchange rose 12.08 points, or 1.36 percent, to 901.10.