Quarterly report pursuant to sections 13 or 15(d)

3. STOCK OPTION PLAN AND STOCK-BASED COMPENSATION (Details)

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3. STOCK OPTION PLAN AND STOCK-BASED COMPENSATION (Details)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Stock Option Plan And Stock-Based Compensation Details    
Risk-free interest rate, Minimum 0.66% 1.27%
Risk-free interest rate, Maximum 1.00%  
Expected dividend yield 0.00% 0.00%
Volatility factor 85.00% 90.00%
Expected life of option, Minimum 4 years 6 months 5 years
Expected life of option, Maximum 6 years 7 years