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6. ACCOUNTING FOR STOCK-BASED COMPENSATION (Details 1)
6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
The fair value of each stock option grant is estimated using the Black-Scholes option pricing model to estimate    
Risk-free interest rate 0.38% 0.97%
Expected life (in years) 3 years 4 months 24 days 6 years
Dividend yield 0.00% 0.00%
Expected volatility 124.00% 99.00%