Quarterly report pursuant to sections 13 or 15(d)

9. Stock Options Valuation Assumptions (Details)

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9. Stock Options Valuation Assumptions (Details)
6 Months Ended
Jun. 30, 2012
Stock Options Valuation Assumptions Details  
Risk-free interest rate, Minimum 0.82%
Risk-free interest rate, Maximum 0.85%
Expected life in years 5 years
Dividend yield 0.00%
Expected volatility, Minimum 59.19%
Expected volatility, Maximum 63.64%