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9. Outstanding Warrants (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Preferred Stock
Dec. 31, 2011
Preferred Stock
Dec. 31, 2012
Common Stock
Dec. 31, 2010
Common Stock
Number of Outstanding, Beginning 7,524,834 6,803,701 392,479 443,853 1,428,590 1,428,590
Number of Warrants Granted         1,816,000  
Number of Warrants Exercised         (1,432,667)  
Number of Warrants Expired     (392,479) (51,374) (5,000)  
Number of Outstanding, Ending 7,524,834 6,803,701 0 392,479 1,806,923 1,428,590
Number of Warrants Exercisable, Ending     0 392,479    
Weighted Average Exercise Price Outstanding, Beginning $ 0.59 $ 0.94 $ 3 $ 3 $ 0.35 $ 0.35
Weighted Average Exercise Price Granted         $ 0.001  
Weighted Average Exercise Price Exercised         $ 0.001  
Weighted Average Exercise Price Expired     $ 3 $ 3 $ 3  
Weighted Average Exercise Price Outstanding, Ending $ 0.59 $ 0.94   $ 3 $ 0.27 $ 0.35
Weighted Average Remaining Contractual Life (in years) Outstanding, Beginning     3 months 1 year 2 months 5 days 3 years 29 days 4 years 29 days
Weighted Average Remaining Contractual Life (in years) Outstanding, Ending       3 months 2 years 8 months 8 days 4 years 29 days