| Warrants | Weighted Average Share Price | Aggregate intrinsic value | Weighted average remaining contractual life (years) | ||||||||||||
Outstanding at year ended July 31, 2011 | 3,758,455 | $ | 2.50 | $ | 3,710,880 | 3.83 | ||||||||||
Granted | - | - | - | - | ||||||||||||
Exercised | - | - | - | - | ||||||||||||
Expired | (2,000 | ) | 25.00 | - | - | |||||||||||
Outstanding at year ended July 31, 2012 | 3,756,455 | $ | 2.58 | $ | - | 2.83 | ||||||||||
Granted | - | - | - | - | ||||||||||||
Exercised | - | - | - | - | ||||||||||||
Expired | (45,578 | ) | 9.34 | - | - | |||||||||||
Outstanding at year ended July 31,2013 | 3,710,877 | $ | 2.50 | $ | - | 1.87 |