Quarterly report pursuant to sections 13 or 15(d)

5. Stock options and warrants (Details 1)

v2.4.0.8
5. Stock options and warrants (Details 1) (Option [Member], USD $)
6 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Outstanding Options    
Shares 27,248,098 27,278,098
Life (Years) 7 years 7 months 6 days  
Weighted Average Exercise Price $ 0.27 $ 0.27
Exercisable Options    
Shares 5,648,098  
Weighted Average Exercise Price $ 0.34  
$ 0.25 - $ 0.99 [Member]
   
Outstanding Options    
Shares 27,166,679  
Life (Years) 7 years 7 months 6 days  
Weighted Average Exercise Price $ 0.27  
Exercisable Options    
Shares 5,566,679  
Weighted Average Exercise Price $ 0.32  
$ 1.00 - $ 1.99 [Member]
   
Outstanding Options    
Shares 81,419  
Life (Years) 2 years 3 months 18 days  
Weighted Average Exercise Price $ 1.36  
Exercisable Options    
Shares 81,419  
Weighted Average Exercise Price $ 1.26