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8. Stockholder's Equity (Tables)
 12 Months Ended
Dec. 31, 2012
Stockholders Equity Tables  
Common Stock Warrants

Transactions in common stock warrants are as follows:

 

   

Number of

Warrants

    

Exercise

Prices

  
Balance, December 31, 2010     725,000     $ .20 - $.75  
   Warrants exercised     (125,000 )   $ .30 - $.40  
Balance, December 31, 2011     600,000     $ .30 - $.60  
Warrants issued     1,734,667     $ 2.50 - $4.50  
   Warrants exercised     (250,000 )   $ .30 - $2.50  
   Warrants expired     (150,000 )   $ .30 - $.40  
Balance, December 31, 2012     1,934,667     $ .25 - $4.50  
Warrants Maturity
The above common stock warrants              
   expire as follows:              
               
Year ended December 31:              
2013     50,000        
2014     1,157,750        
2015     476,917        
Thereafter     250,000        
      1,934,667