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8. Stockholder's Equity (Details) (Warrant [Member], USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Beginning balance, shares 600,000 725,000
Warrants issued, shares 1,734,667  
Warrants exercised, shares (250,000) (125,000)
Warrants expired, shares (150,000)  
Ending balance, shares 1,934,667 600,000
2013 50,000  
2014 1,157,750  
2015 476,917  
Thereafter 250,000  
Total 1,934,667  
Maximum [Member]
    
Beginning balance, Exercise Prices 0.60 0.75
Warrants issued, Exercise Prices 4.5 0.4
Warrants exercised, Exercise Prices 2.5  
Warrants expired, Exercise Prices 0.40  
Ending balance Exercise Prices 4.5 0.60
Minimum [Member]
    
Beginning balance, Exercise Prices 0.30 0.20
Warrants issued, Exercise Prices 2.50 0.30
Warrants exercised, Exercise Prices 0.30  
Warrants expired, Exercise Prices 0.30  
Ending balance Exercise Prices 0.25 0.30