Fair value of Accounting allocation of initial proceeds - Series A, B, C, D & E 9% Convertible Preferred Stock (Details) (USD $)	12 Months Ended			3 Months Ended	12 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012	Jan. 31, 2014 Series E Convertible Preferred Stock	Jul. 31, 2013 Series E Convertible Preferred Stock	Jul. 31, 2014 Series F Convertible Preferred Stock
Net proceeds	$ 2,655,000	$ 2,615,000	$ 1,975,000	$ 750,000	$ 1,165,000	$ 2,020,000
Derivative warrant liability fair value				(942,279)	(1,189,744)	(2,016,064)
Other issuance costs (Finders' Fee)				(64,000)		(166,000)
Derivative additional investment rights fair value					(1,264,683)	(863,735)
Make whole payments liability				(216,000)	(330,750)	(560,250)
Deemed dividend	$ (2,058,329)	$ (1,722,474)	$ (376,746)	$ (472,279)	$ (1,620,177)	$ (1,586,050)