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11. Stockholders deficit (Tables)
3 Months Ended
Mar. 31, 2015
Equity [Abstract]  
Stockholders Deficit
  Number of Options and Warrants 

Weighted Average

Exercise Price Per Share

            
 Outstanding at December 31, 2013   5,100,000   $0.185 
            
 Granted   5,280,000    0.139 
 Cancelled/forfeited   —      —   
 Expired   (3,600,000)   (0.20)
 Exercised   —      —   
 Outstanding at December 31, 2014 and March 31, 2015   6,780,000   $0.139