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10. Stockholders Equity (Tables)
12 Months Ended
Dec. 31, 2012
Stockholders Equity Tables  
Weighted-average assumptions

The following weighted-average assumptions were used for grants issued during 2012 and 2011 under the ASC No. 718 requirements:

 

            2012   2011
Weighted average risk-free rate 0.53%   1.54%
Weighted average volatility 95.21%   97.70%
Dividend yield 0.00%   0.00%
Expected life 5.71 years   5.22 years
Stock option activity

The following table summarizes stock option activity for the year ended December 31, 2012:

 

    Outstanding
Options
    Weighted
Average Exercise
Price per Share
    Weighted
Average
Remaining
Contractual
Life (in years)
    Aggregate Intrinsic
Value
 
Outstanding December 31, 2011     4,314,000     $ 0.59       7.74     $ 2,000  
Granted     452,000       0.15              
Cancelled     (1,351,000 )     0.51              
Forfeited     (1,596,000 )     0.45                  
Expired     (5,000 )     0.98              
Outstanding December 31, 2012     1,814,000     $ 0.66       6.37     $ 25,000  
                                 
Options vested and exercisable at December 31, 2012     1,330,000     $ 0.82       5.39     $ 2,000  
Restricted stock unit activity

The following table summarizes restricted stock unit activity during 2012:

 

        Outstanding Restricted Stock Units     Weighted Average Fair Value per Share  
December 31, 2011       49,000     $ 0.31  
  Granted       620,000        
  Released       (44,000 )      
  Cancelled       (65,000 )      
December 31, 2012       560,000     $ 0.14  
                     
Balance exercisable at December 31, 2012                
Warrant activity

The following summarizes warrant activity during 2012:

 

      Outstanding
Warrants
    Weighted
Average Exercise
Price per Share
    Weighted
Average
Remaining
Contractual
Life (in years)
 
Outstanding December 31, 2011       4,500,000     $ 0.79       5.35  
  Granted                    
  Exercised                    
  Forfeited                    
Outstanding December 31, 2012       4,500,000     $ 0.79       4.35  
                             
Balance exercisable at December 31, 2012       4,500,000     $ 0.79       4.35