|
5. Stock options and warrants (Details Narrative) (USD $)
|
6 Months Ended |
|---|---|
|
Jun. 30, 2013
|
|
|
Option [Member]
|
|
| Amortization expense | $ 870,369 |
| Future unamortized compensation expense | 4,310,665 |
|
Warrant [Member]
|
|
| Future unamortized compensation expense | 227,584 |
|
Warrant [Member] | Employee and Consultant Warrants From Prior Period Vested [Member]
|
|
| Amortization expense | $ 52,631 |
|
2004 Stock Option Plan [Member]
|
|
| Shares available to be granted under 2004 Stock Option Plan | 2,750,442 |