Quarterly report pursuant to sections 13 or 15(d)

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

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4. STOCK OPTION PLAN AND STOCK-BASED COMPENSATION (Details)
9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Notes to Financial Statements    
Risk-free interest rate, Minimum 0.31% 0.28%
Risk-free interest rate, Maximum 1.27% 0.84%
Expected dividend yield 0.00% 0.00%
Volatility factor 90.00% 90.00%
Expected life of option, Minimum 2 years 9 months 4 years 7 months 5 days
Expected life of option, Maximum 7 years 5 years