Quarterly report pursuant to sections 13 or 15(d)

5. Stock options and warrants (Details Narrative)

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5. Stock options and warrants (Details Narrative) (USD $)
3 Months Ended 3 Months Ended
Mar. 31, 2013
Option [Member]
Dec. 31, 2012
Warrant [Member]
Mar. 31, 2013
Warrant [Member]
Employee [Member]
Mar. 31, 2013
Warrant [Member]
Consultant [Member]
Mar. 31, 2013
2004 Stock Option Plan [Member]
Shares available to be granted under 2004 Stock Option Plan         2,750,442
Amortization expense $ 404,587   $ 24,310 $ 23,251  
Future unamortized compensation expense $ 4,727,826 $ 226,893