7. Stock options and warrants (Details-Warrants outstanding and exercisable) (Warrants, USD $)
|
3 Months Ended |
---|---|
Mar. 31, 2014
|
|
Outstanding Warrants | |
Shares | 7,251,050 |
Weighted Average Exercise Price | $ 0.38 |
Exercisable Warrants | |
Shares | 6,247,716 |
Weighted Average Exercise Price | $ 0.38 |
$ 0.30 - $ 0.99 [Member]
|
|
Outstanding Warrants | |
Shares | 6,631,050 |
Weighted Average Exercise Price | $ 0.32 |
Exercisable Warrants | |
Shares | 5,747,716 |
Weighted Average Exercise Price | $ 0.31 |
$1.00 - $1.99 [Member]
|
|
Outstanding Warrants | |
Shares | 620,000 |
Life (Years) | 6 months |
Weighted Average Exercise Price | $ 1.00 |
Exercisable Warrants | |
Shares | 500,000 |
Weighted Average Exercise Price | $ 1.00 |
$ 0.30 - $ 0.99 [Member]
|
|
Outstanding Warrants | |
Life (Years) | 4 years 3 months 18 days |