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11. Income taxes (Details 1) (USD $) | Dec. 31, 2012 | Dec. 31, 2011
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Income Taxes Details 1 |  |
Net operating loss carry forwards | $ 15,900,000 | $ 13,700,000
Valuation allowance | (15,900,000) | (13,700,000)
Total deferred taxes net of valuation allowance | 0 | 0
Net operating loss carryforwards | $ 39,000,000 |

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