Tokyo stocks fell Friday, with the Nikkei index briefly losing over 2 percent to below the 50,000 line, dragged down by heavyweight technology shares amid caution about recent rapid gains.The 225-issue Nikkei Stock Average ended down 607.31 points, or 1.19 percent, from Thursday at 50,276.37. The broader Topix index finished 14.60 points, or 0.44 percent, lower at 3,298.85.On the top-tier Prime Market, the main decliners were nonferrous metal, electric appliance and machinery issues.The U.S. dollar mostly remained in the lower 153 yen zone in Tokyo amid a lack of fresh trading incentives, d…READ FULL ARTICLE