Annual report pursuant to section 13 and 15(d)

9. Stock Options and warrants (Details)

v2.4.0.6
9. Stock Options and warrants (Details) (Stock Options, USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Dec. 31, 2007
Dec. 31, 2006
Dec. 31, 2005
Dec. 31, 2004
Stock Options
                 
Beginning Balance 24,067,982 4,837,488 4,851,225 4,601,225 4,188,445 3,999,559 6,508,561 14,422,652 13,250,000
Granted 4,858,000 19,800,000 181,818 333,333 2,700,000 238,679 1,313,605 2,085,909 1,172,652
Exercised (776,667) (77,778) (195,555) (83,333)     (2,860,000)    
Forfeited or expired (871,127) (310,000)     (2,287,220) (49,793) (962,607)    
Cancelled   (181,818)           (10,000,000)  
Ending Balance 27,278,098 24,067,982 4,837,488 4,851,225 4,601,225 4,188,445 3,999,559 6,508,561 14,422,652
Weighted Average Exercise Price, Outstanding Beginning Balance $ 0.30 $ 0.52 $ 0.52 $ 0.53 $ 0.95 $ 0.99 $ 0.53 $ 0.18 $ 0.11
Weighted Average Exercise Price, Granted $ 0.30 $ 0.26 $ 0.55 $ 0.30 $ 0.28 $ 0.55 $ 1.21 $ 0.92 $ 1.03
Weighted Average Exercise Price, Exercised $ 0.47 $ 0.27 $ 0.27 $ 0.27     $ 0.10    
Weighted Average Exercise Price, Forfeited or expired $ 0.98 $ 0.76     $ 1.00 $ 1.96 $ 0.84    
Weighted Average Exercise Price, Cancelled   $ 0.55           $ 0.10  
Weighted Average Exercise Price, Outstanding Ending Balance $ 0.27 $ 0.30 $ 0.52 $ 0.52 $ 0.53 $ 0.95 $ 0.99 $ 0.53 $ 0.18