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2. Summary of significant accounting policies (Details) (USD $)
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Jun. 30, 2012
|
Dec. 31, 2011
|
|---|---|---|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Fair value of Derivative Liability | $ 1,725,138 | $ 1,643,139 |
|
Level1 [Member]
|
||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Fair value of Derivative Liability | 0 | 0 |
|
Level2 [Member]
|
||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Fair value of Derivative Liability | 0 | 0 |
|
Level3 [Member]
|
||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||
| Fair value of Derivative Liability | $ 1,725,138 | $ 1,643,139 |