Tokyo stocks mixed by noon

The Nikkei 225 index at the Tokyo Stock Exchange gained 28.43 points to 8,565.15 by the midday break.But the Topix index of all first-section shares ended the morning slightly lower, down 0.12 percent, or 0.88 points, at 723.49.Markets have grown increasingly cautious ahead of Sundays Greek elections on fears that a victory for anti-austerity groups could lead to Athens making a disorderly exit from the eurozone.Many investors remain on the fence, awaiting the outcome of Greeces upcoming elections, so risk capital is sparse, said Monex market analyst Toshiyuki Kanayama.Dealers were also awaiting a Bank of Japan policy meeting that begins on Thursday and a G20 summit next week.Markets largely shrugged off Japans stronger-than-expected April machinery orders data released just before the opening bell, in a positive sign for the worlds third-largest economy.Orders rose 5.7 percent on-month, beating expectations for a 1.5 percent increase and reversing a decline in March.Investors have been hurt badly enough lately that few have any appetite for any more risk taking in the current environment, Mattia Ciancaleoni, director of equity sales at Citigroup, told Dow Jones Newswires.On currency markets the euro bought $1.2488 and 99.43 yen in Tokyo midday trade, from $1.2502 and 99.44 yen in New York late Tuesday. The dollar edged up to 79.60 yen from 79.52 yen in New York.On Tuesday, US shares reversed the previous days losses with the Dow Jones Industrial Average finishing 1.31 percent higher at 12,573.80.In Tokyo trade, some exporters were boosted by the weaker yen with Nikon climbing 2.00 percent to 2,285 yen and Honda Motor up 0.31 percent to 2,542 yen.Hitachi rose 1.29 percent to 471 yen following a Nikkei business daily report that it plans to acquire a German power-plant servicer.Oil-linked stocks were lower, with energy development company Inpex falling 2.55 percent to 438,500 yen, on weakening crude prices.