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3. Interest, Advances and Promissory Notes Payable (Detail) - Summary Interest Payable Activity (USD $)
24 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Balance $ 1,426,294 $ 1,930,695
Interest incurred on promissory notes payable 486,580 520,306
Transfer of balance to accounts payable (1,167)  
Repayment of interest payable through line of credit (6,500)  
Repayment of interest payable through exercise of options (860,244)  
Other $ (201)