Capital stock (Tables)

9 Months Ended

Sep. 30, 2014

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

			Weighted average
	Number of options		Exercise price
Outstanding at December 31, 2012	8,206,875		US$0.05
Expired/cancelled	(6,577,500	)	US$0.05
Outstanding at December 31, 2013	1,629,375		US$0.08
Granted	10,411,450		US$0.10
Outstanding at September 30, 2013	12,040,825		US$0.09

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

			Weighted average		Weighted average		Aggregate
	Exercise Price	Number	remaining contractual life		exercise price		intrinsic value
US$	0.04	65,625	1.48 years	US$	0.04	$	3,281
	0.06	33,750	1.48 years		0.06		1,013
	0.08	1,500,000	1.78 years		0.08		15,000
	0.09	1,105,000	4.88 years		0.09		-
	0.09	9,161,450	4.88 years		0.09		-
	0.10	105,000	2.77 years		0.10		-
	0.10	40,000	2.91 years		0.10		-
	0.15	22,500	1.48 years		0.15		-
	0.20	7,500	1.48 years		0.20		-
		12,040,825	4.15 years	US$	0.09	$	$19,294

Schedule of Stockholders' Equity Note, Warrants or Rights, Activity [Table Text Block]

			Weighted average
	Number of warrants		exercise price
Outstanding at December 31, 2012	54,392,014	$	0.08
Issued as part of private placement	4,050,000		0.20
Issued as compensation to consultant	230,000		0.20
Outstanding at December 31, 2013	58,672,014		0.09
Issued as part of private placements	13,741,141		0.20
Issued at compensation warrants	8,227,646		0.09
Outstanding at September 30, 2014	80,640,801	$	0.085

Disclosure of Share-based Compensation Arrangements By Share-based Payment Award And Warrants Or Rights [Table Text Block]

			Weighted Average
Weighted Average Exercise Price		Number	Remaining Contractual Life
US$	0.080	2,499,999	1.19 years
$	0.080	9,500,001	1.19 years
US$	0.080	3,000,000	1.23 years
$	0.080	3,000,000	1.23 years
US$	0.080	3,600,000	1.42 years
$	0.080	7,350,000	1.42 years
$	0.150	2,500,000	1.73 years
$	0.010	1,000,000	0.18 years
US$	0.065	12,285,012	2.68 years
US$	0.050	2,457,002	2.68 years
US$	0.065	1,000,000	3.06 years
US$	0.050	200,000	3.06 years
US$	0.010	5,000,000	3.15 years
US$	0.050	1,000,000	3.15 years
US$	0.200	2,375,000	1.63 years
US$	0.200	675,000	1.64 years
US$	0.200	1,000,000	1.64 years
US$	0.200	230,000	1.67 years
US$	0.200	4,955,547	4.45 years
US$	0.200	8,641,151	4.49 years
US$	0.200	144,443	4.50 years
US$	0.090	250,000	2.51 years
US$	0.090	250,000	4.54 years
US$	0.090	250,000	2.93 years
US$	0.095	250,000	4.77 years
US$	0.100	1,540,000	4.54 years
US$	0.100	1,150,000	4.54 years
US$	0.080	4,162,650	2.55 years
US$	0.180	263,886	1.63 years
US$	0.180	111,110	1.63 years
$	0.085	80,640,801	2.47 years