7. Stock options and warrants (Details-Options outstanding and exercisable) (Options, USD $)
|
3 Months Ended | ||
---|---|---|---|
Mar. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
Outstanding Options | |||
Shares | 20,254,908 | 20,309,908 | 27,278,098 |
Life (Years) | 6 years 9 months 18 days | ||
Weighted Average Exercise Price | $ 0.28 | $ 0.28 | $ 0.27 |
Exercisable Options | |||
Shares | 18,111,280 | ||
Weighted Average Exercise Price | $ 0.28 | ||
$ 0.21 - $ 0.99 [Member]
|
|||
Outstanding Options | |||
Shares | 19,991,679 | ||
Life (Years) | 6 years 9 months 18 days | ||
Weighted Average Exercise Price | $ 0.27 | ||
Exercisable Options | |||
Shares | 17,991,679 | ||
Weighted Average Exercise Price | $ 0.27 | ||
$ 1.00 - $ 1.99 [Member]
|
|||
Outstanding Options | |||
Shares | 263,229 | ||
Life (Years) | 6 years | ||
Weighted Average Exercise Price | $ 1.22 | ||
Exercisable Options | |||
Shares | 119,601 | ||
Weighted Average Exercise Price | $ 1.27 |