Quarterly report pursuant to sections 13 or 15(d)

1. Basis of Presentation, Consolidation, and Summary of Selected Significant Accounting Policies (Deatils 2)

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1. Basis of Presentation, Consolidation, and Summary of Selected Significant Accounting Policies (Deatils 2)
6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Black-Scholes option-pricing model method with the following assumptions    
Dividend yield 0.00% 0.00%
Stock volatility, minimum 111.20% 138.10%
Stock volatility, maximum 148.70% 179.70%
Average Risk-free interest rate, minimum 0.28% 1.93%
Average Risk-free interest rate, maximum   2.46%
Average option term (years) 4 years 4 years