7. Stockholders equity (Details) (USD $)	Mar. 31, 2013
Shares Outstanding	4,690,562
Shares Vested	4,262,094
Warrant1Member
Shares Outstanding	2,805,600
Weighted Average Exercise Price	1.45
Shares Vested	2,805,600
Expiration Fiscal Period	4th Qtr, 2013
Warrant2Member
Shares Outstanding	40,000
Weighted Average Exercise Price	0.01
Shares Vested	40,000
Expiration Fiscal Period	3rd Qtr, 2014
Warrant3Member
Shares Outstanding	200,000
Weighted Average Exercise Price	1.25
Shares Vested	200,000
Expiration Fiscal Period	4th Qtr, 2014
Warrant4Member
Shares Outstanding	108,500
Weighted Average Exercise Price	0.40
Shares Vested	108,500
Expiration Fiscal Period	1st Qtr, 2015
Warrant5Member
Shares Outstanding	104,000
Weighted Average Exercise Price	0.19
Shares Vested	104,000
Expiration Fiscal Period	2nd Qtr, 2015
Warrant6Member
Shares Outstanding	10,000
Weighted Average Exercise Price	0.19
Shares Vested	10,000
Expiration Fiscal Period	3rd Qtr, 2015
Warrant7Member
Shares Outstanding	30,000
Weighted Average Exercise Price	0.53
Shares Vested	30,000
Expiration Fiscal Period	4th Qtr, 2016
Warrant8Member
Shares Outstanding	50,000
Weighted Average Exercise Price	0.50
Shares Vested	50,000
Expiration Fiscal Period	1st Qtr, 2017
Warrant9Member
Shares Outstanding	50,000
Weighted Average Exercise Price	0.50
Shares Vested	50,000
Expiration Fiscal Period	2nd Qtr, 2017
Warrants10Member
Shares Outstanding	1,079,000
Weighted Average Exercise Price	0.55
Shares Vested	803,265
Expiration Fiscal Period	4th Qtr, 2021
Warrants11Member
Shares Outstanding	125,000
Weighted Average Exercise Price	0.53
Shares Vested	46,872
Expiration Fiscal Period	1st Qtr, 2022
Warrant12 [Member]
Shares Outstanding	35,000
Weighted Average Exercise Price	0.53
Shares Vested	12,395
Expiration Fiscal Period	2nd Qtr, 2022
Warrant13 [Member]
Shares Outstanding	1,462
Weighted Average Exercise Price	3.25
Shares Vested	1,462
Expiration Fiscal Period	3rd Qtr, 2022
Warrant14 [Member]
Shares Outstanding	52,000
Weighted Average Exercise Price	0.75
Shares Vested
Expiration Fiscal Period	1st Qtr, 2023