Japan's Nikkei stock index closes down 5 percent (AP)

Passers-by look  at an electronic  stock board in  downtown Tokyo Friday,  Oct. 31, 2008.  Japan's benchmark stock  index closed down  5 percent Friday  with investors dumping  stocks after the  central bank's smaller-than-expected  cut in its  key interest rate.  The Nikkei 225  index lost 452.78  points to close  at 8,576.98 points.  (AP Photo/Koji Sasahara)AP - Japan's benchmark stock index closed down 5 percent Friday as investors shrugged off an interest rate cut by the central bank and instead unloaded shares for quick profits ahead of a long weekend.