FXstreet.com (Barcelona) - Asian main stock indexes have opened Friday with gains, reversing partially drops posted during previous sessions this week, as oil and commodity prices bounced, and rising hopes ahead of the G20 meeting this week-end.

Japan Nikkei Index has risen 3.2%, while Hong Kong's Hang Seng Index rose 3% and Australian S&P ASX 200 increased 1.4%, following strong pick ups in Wall street in Thursday's session; Dow Jones increased 6.7% while the S&P 500 gained 6.9% and the Nasdaq technological index rose 6.5%.