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11. Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2015

	2015		2014
Weighted-average expected dividend yield (%)		–		–
Weighted-average expected volatility (%)		104.81		103.32
Weighted-average risk-free interest rate (%)		1.03		0.96
Weighted-average expected life of option (years)		5.00		5.00
Weighted-average exercise price ($)		0.77		0.77
Model used		Black-Scholes		Black-Scholes