Stockholders' Deficiency (Details) (USD $)	9 Months Ended
	Apr. 30, 2013
Issuance of common stock for cash warrant exercises (in shares)	26,023,461
Issuance of common stock for cashless warrant exercises	$ 2,362,616
Issuance of common stock for cashless warrant exercises (in shares)	29,184,675
Issuance of common stock for stock option exercises	1,056
Issuance of common stock for stock option exercises (in shares)	1,056,488
Common Stock [Member]
Issuance of common stock on conversion of convertible preferred stock	65,338
Issuance of common stock on conversion of convertible preferred stock (in shares)	65,337,495
Issuance of common stock as make whole payments on convertible preferred stock	22,118
Issuance of common stock as make whole payments on convertible preferred stock (in shares)	22,118,091
Issuance of common stock for services	3,074
Issuance of common stock for services (in shares)	3,073,688
Issuance of common stock for cash warrant exercises	26,023
Issuance of common stock for cash warrant exercises (in shares)	26,023,461
Issuance of common stock for cashless warrant exercises	29,185
Issuance of common stock for cashless warrant exercises (in shares)	29,184,675
Issuance of common stock for stock option exercises	1,056
Issuance of common stock for stock option exercises (in shares)	1,056,488
Issuance of options in lieu of deferred salary	0
Issuance of options in lieu of deferred salary (in shares)	0
Amortization of stock options as employee compensation	0
Amortization of stock options as employee compensation (in shares)	0
Total	146,794
Total (in shares)	146,793,898
Additional Paid-In Capital [Member]
Issuance of common stock on conversion of convertible preferred stock	153,662
Issuance of common stock as make whole payments on convertible preferred stock	641,812
Issuance of common stock for services	220,618
Issuance of common stock for cash warrant exercises	754,681
Issuance of common stock for cashless warrant exercises	2,333,431
Issuance of common stock for stock option exercises	0
Issuance of options in lieu of deferred salary	585,551
Amortization of stock options as employee compensation	27,824
Total	4,717,579
Change To Stockholder's Equity [Member]
Issuance of common stock on conversion of convertible preferred stock	219,000
Issuance of common stock as make whole payments on convertible preferred stock	663,930
Issuance of common stock for services	223,692
Issuance of common stock for cash warrant exercises	780,704
Issuance of common stock for cashless warrant exercises	2,362,616
Issuance of common stock for stock option exercises	1,056
Issuance of options in lieu of deferred salary	585,551
Amortization of stock options as employee compensation	27,824
Total	$ 4,864,373