Going concern (Narrative) (Details)	9 Months Ended
	Sep. 30, 2012 USD ($) M	Sep. 30, 2012 CNY
Going Concern 1	$ 52,000,000
Going Concern 2	10,700,000
Going Concern 3		76,000,000
Going Concern 4	12,000,000
Going Concern 5		380,000,000
Going Concern 6	60,000,000
Going Concern 7	$ 46,700,000
Going Concern 8	12	12