Private Placements and Public Offerings (Tables)

12 Months Ended

Jul. 31, 2013

Private Placements and Public Offerings

Schedule of derivative liabilities valued using a Monte Carlo valuation model

	March 28, 2012
Closing price per share of common stock	0.22
Exercise price per share	0.50
Expected volatility	125.0	%
Risk-free interest rate	1.05	%
Dividend yield	—
Floor price	0.50
Remaining expected term of underlying securities (years)	4.24