A man walks past a board showing exchage rate and graph between Japanese yen and U.S. dollar outside of a brokerage in Tokyo December 12, 2008. Japanese Finance Minister Shoichi Nakagawa said on Friday that big moves in currency markets were undesirable, adding that he was watching forex market moves with great interest. The dollar tumbled to a 13-year low against the yen on Friday below 90 yen after the U.S. Senate voted down a bailout bill to help U.S. automakers. REUTERS/Kim Kyung-Hoon (JAPAN)