Stockholders’ Deficiency - Stockholders’ deficiency transactions (Details) (USD $)	6 Months Ended		216 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014
Issuance of common stock for services, Amount	$ 207,000	$ 185,342	$ 15,106,700
Common Stock
Issuance of common stock on conversion of convertible preferred stock, Shares	30,166,666
Issuance of common stock on conversion of convertible preferred stock, Amount	30,167
Issuance of common stock as make-whole payments on convertible preferred stock, Shares	8,730,195
Issuance of common stock as make-whole payments on convertible preferred stock, Amount	8,730
Issuance of common stock for services, Shares	1,233,334
Issuance of common stock for services, Amount	1,233
Issuance of common stock as employee compensation, Shares	4,333,333
Issuance of common stock as employee compensation, Amount	4,333
Issuance of common stock for cash warrant exercises, Shares	70,732,022
Issuance of common stock for cash warrant exercises, Amount	70,731
Issuance of options in lieu of deferred salary
Exercise of employee stock options, Shares	526,306
Exercise of employee stock options, Amount	526
Exercise of employee stock options
Amortization of stock options as employee compensation
Total, Shares	115,721,856
Total, Amount	115,720
Additional Paid-In Capital
Issuance of common stock on conversion of convertible preferred stock, Amount	(30,167)
Issuance of common stock as make-whole payments on convertible preferred stock, Amount	235,620
Issuance of common stock for services, Amount	75,767
Issuance of common stock as employee compensation, Amount	125,667
Issuance of common stock for cash warrant exercises, Amount	4,090,828
Issuance of options in lieu of deferred salary	257,505
Exercise of employee stock options	237,566
Amortization of stock options as employee compensation	5,365
Total, Amount	4,998,151
Change to Stockholders Equity
Issuance of common stock on conversion of convertible preferred stock, Amount
Issuance of common stock as make-whole payments on convertible preferred stock, Amount	244,350
Issuance of common stock for services, Amount	77,000
Issuance of common stock as employee compensation, Amount	130,000
Issuance of common stock for cash warrant exercises, Amount	4,161,559
Issuance of options in lieu of deferred salary	257,505
Exercise of employee stock options	237,566
Amortization of stock options as employee compensation	5,365
Total, Amount	$ 5,113,871