| 2013 | 2012 | |||||||||||||||
|
Warrants |
Weighted Average Exercise Price |
Warrants |
Weighted Average Exercise Price |
|||||||||||||
|
Beginning balance |
782,259 | $ | 0.85 | 1,235,877 | $ | 0.35 | ||||||||||
|
Stock warrants granted |
- | 814,914 | 0.29 | |||||||||||||
|
Stock warrants expired |
- | - | ||||||||||||||
|
Stock warrants exercised |
(427,713 | ) | 0.55 | (1,268,532 | ) | 0.01 | ||||||||||
|
Ending balance |
354,546 | $ | 1.21 | 782,259 | $ | 0.85 | ||||||||||