Derivative Liability (Tables)

3 Months Ended

Oct. 31, 2012

Derivative Liability [Abstract]

Schedule of Derivative Instruments

	October 31, 2012		July 31, 2012
Volatility	85.0	%	85.0	%
Risk-free interest rate	0.72	%	0.53	%
Dividend yield	0.0	%	0.0	%
Expected life	4.2 years		0.42 - 4.4 years