6. Stockholders equity (Details) (USD $)	Sep. 30, 2012
Warrant1Member
Shares Outstanding	2,805,600
Weighted Average Exercise Price	$ 1.45
Shares Vested	2,805,600
Expiration Fiscal Period	June 30, 2013
Warrant2Member
Shares Outstanding	40,000
Weighted Average Exercise Price	$ 0.01
Shares Vested	40,000
Expiration Fiscal Period	March 31, 2014
Warrant3Member
Shares Outstanding	200,000
Weighted Average Exercise Price	$ 1.25
Shares Vested	200,000
Expiration Fiscal Period	June 30, 2014
Warrant4Member
Shares Outstanding	108,500
Weighted Average Exercise Price	$ 0.24
Shares Vested	108,500
Expiration Fiscal Period	September 30, 2014
Warrant5Member
Shares Outstanding	30,000
Weighted Average Exercise Price	$ 0.53
Shares Vested	30,000
Expiration Fiscal Period	June 30, 2016
Warrant6Member
Shares Outstanding	50,000
Weighted Average Exercise Price	$ 0.50
Shares Vested	50,000
Expiration Fiscal Period	September 30, 2016
Warrant7Member
Shares Outstanding	1,079,000
Weighted Average Exercise Price	$ 55
Shares Vested	677,640
Expiration Fiscal Period	June 30, 2021
Warrant8Member
Shares Outstanding	125,000
Weighted Average Exercise Price	$ 0.53
Shares Vested
Expiration Fiscal Period	September 30, 2021
Warrant9Member
Shares Outstanding	35,000
Weighted Average Exercise Price	$ 0.53
Shares Vested
Expiration Fiscal Period	December 31, 2021
Warrants10Member
Shares Outstanding	1,462
Weighted Average Exercise Price	$ 3.25
Shares Vested	1,462
Expiration Fiscal Period	March 31, 2022
Warrants11Member
Shares Outstanding	52,000
Weighted Average Exercise Price	$ 0.75
Shares Vested
Expiration Fiscal Period	September 30, 2022