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12. Shareholders' Interest: Stock Option Plan: Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Tables)
3 Months Ended
Mar. 31, 2013
Tables/Schedules  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

Three Months Ended March 31, 2013

Three Months Ended March 31, 2012

Dividend yield (1)

0.00%

0.00%

Expected volatility (2)

99.2% - 100.3%

86.7% - 87.1%

Risk-free interest rates (3)

0.63%

0.89%

Expected lives (2)

2.0 – 4.0 YEARS

5 YEARS