Quarterly report pursuant to sections 13 or 15(d)

5. Stock options and warrants (Details 1)

v2.4.0.6
5. Stock options and warrants (Details 1) (USD $)
3 Months Ended 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Option [Member]
Dec. 31, 2012
Option [Member]
Mar. 31, 2013
Option [Member]
$ 0.21 - $ 0.99 [Member]
Mar. 31, 2013
Option [Member]
$ 1.00 - $ 1.99 [Member]
Outstanding Options            
Shares 17,198,598 28,049,558 27,278,098 27,278,098 27,196,679 81,419
Life (Years)     7 years 9 months 18 days   7 years 9 months 18 days 2 years 6 months
Weighted Average Exercise Price     $ 0.27 $ 0.27 $ 0.27 $ 1.36
Exercisable Options            
Shares     13,718,098   13,636,679 81,419
Weighted Average Exercise Price     $ 0.29   $ 0.28 $ 1.36