Quarterly report pursuant to sections 13 or 15(d)

7. Derivative liability (Details)

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7. Derivative liability (Details) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Derivative [Line Items]    
Risk-free interest rate 0.09% 0.02%
Expected volatility 165.00% 165.00%
Expected life (in years) 14 days 14 days
Expected dividend yield 0.00% 0.00%
Fair Value:    
2009 Fall Warrants    $ 3,221,138
Fair value of derivative liabilities    3,221,138
2009 Fall Warrants [Member]
   
Fair Value:    
2009 Fall Warrants 3,441,752 3,221,138
Fair value of derivative liabilities $ 3,441,752 $ 3,221,138