CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' DEFICIENCY (USD $)	12 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Balance	$ (10,141,332)	$ (8,380,190)	$ (8,442,136)
Issuance of common stock as employee compensation	130,000		130,543
Issuance of common stock in exchange for services rendered	286,780	392,422	699,445
Issuance of preferred stock in financing
Issuance of common stock upon conversion of preferred stock		0
Issuance of common stock for preferred stock make whole payments	689,850	886,950	485,190
Exercise of additional investment rights	237,566		841,333
Cancellation of common stock
Exercise of stock options for cash	526	5,180	1,300
Exercise of warrants for cash	4,496,456	3,293,245	30,000
Cashless exercise of warrants		2,362,616	7,230,734
Stock-based compensation	262,871	837,753	602,384
Net loss	(1,417)	(8,554,322)	(9,490,278)
Preferred stock dividend (see Note 9)	(2,058,329)	(1,722,474)	(376,746)
Currency translation adjustment	6,971	(12,512)	(91,960)
Balance	(6,090,058)	(10,141,332)	(8,380,190)
Preferred Stock
Balance (in shares)	930	1,490	1,287
Issuance of common stock as employee compensation (in shares)
Issuance of common stock in exchange for services rendered (in shares)
Issuance of preferred stock in financing (in shares)	2,875	2,725	2,000
Issuance of common stock upon conversion of preferred stock (in shares)	(2,555)	(3,285)	(1,797)
Issuance of common stock for preferred stock make whole payments (in shares)
Exercise of additional investment rights
Cancellation of common stock (in shares)
Exercise of stock options for cash (in shares)
Exercise of warrants for cash (in shares)
Cashless exercise of warrants (in shares)
Stock-based compensation
Net loss
Preferred stock dividend (see Note 9)
Currency translation adjustment
Balance (in shares)	1,250	930	1,490
Common Stock
Balance	580,329	354,161	308,520
Balance (in shares)	580,329,160	354,161,297	308,519,768
Issuance of common stock as employee compensation	4,333		981
Issuance of common stock as employee compensation (in shares)	4,333,333		981,353
Issuance of common stock in exchange for services rendered	7,633	8,251	5,402
Issuance of common stock in exchange for services rendered (in shares)	7,633,333	8,251,150	5,401,722
Issuance of preferred stock in financing
Issuance of common stock upon conversion of preferred stock	85,167	92,871	11,980
Issuance of common stock upon conversion of preferred stock (in shares)	85,166,663	92,870,829	11,980,003
Issuance of common stock for preferred stock make whole payments	23,792	30,452	5,319
Issuance of common stock for preferred stock make whole payments (in shares)	23,791,817	30,452,292	5,319,026
Exercise of additional investment rights
Cancellation of common stock		(1,278)
Cancellation of common stock (in shares)		(1,278,246)
Exercise of stock options for cash	526	5,180	1,300
Exercise of stock options for cash (in shares)	526,306	5,180,378	1,299,994
Exercise of warrants for cash	76,731	61,507	200
Exercise of warrants for cash (in shares)	76,731,480	61,506,785	200,000
Cashless exercise of warrants		29,185	20,459
Cashless exercise of warrants (in shares)		29,184,675	20,459,431
Stock-based compensation
Net loss
Preferred stock dividend (see Note 9)
Currency translation adjustment
Balance	778,512	580,329	354,161
Balance (in shares)	778,512,092	580,329,160	354,161,297
Additional Paid-In Capital
Balance	356,401,812	348,099,813	338,124,525
Issuance of common stock as employee compensation	125,667		129,562
Issuance of common stock in exchange for services rendered	279,147	384,171	694,043
Issuance of preferred stock in financing
Issuance of common stock upon conversion of preferred stock	(85,167)	657,129	(11,980)
Issuance of common stock for preferred stock make whole payments	666,058	856,498	479,871
Exercise of additional investment rights	237,566		841,333
Cancellation of common stock		1,278
Exercise of stock options for cash
Exercise of warrants for cash	4,419,725	3,231,738	29,800
Cashless exercise of warrants		2,333,431	7,210,274
Stock-based compensation	262,871	837,753	602,384
Net loss
Preferred stock dividend (see Note 9)
Currency translation adjustment
Balance	362,307,678	356,401,812	348,099,813
Accumulated Deficit
Balance	(367,888,576)	(357,611,780)	(347,744,756)
Issuance of common stock as employee compensation
Issuance of common stock in exchange for services rendered
Issuance of preferred stock in financing
Issuance of common stock upon conversion of preferred stock
Issuance of common stock for preferred stock make whole payments
Exercise of additional investment rights
Cancellation of common stock
Exercise of stock options for cash
Exercise of warrants for cash
Cashless exercise of warrants
Stock-based compensation
Net loss	(1,417)	(8,554,322)	(9,490,278)
Preferred stock dividend (see Note 9)	(2,058,329)	(1,722,474)	(376,746)
Currency translation adjustment
Balance	(369,948,322)	(367,888,576)	(357,611,780)
Accumulated Other Comprehensive Income (Loss)
Balance	765,103	777,615	869,575
Issuance of common stock as employee compensation
Issuance of common stock in exchange for services rendered
Issuance of preferred stock in financing
Issuance of common stock upon conversion of preferred stock
Issuance of common stock for preferred stock make whole payments
Exercise of additional investment rights
Cancellation of common stock
Exercise of stock options for cash
Exercise of warrants for cash
Cashless exercise of warrants
Stock-based compensation
Net loss
Preferred stock dividend (see Note 9)
Currency translation adjustment	6,971	(12,512)	(91,960)
Balance	$ 772,074	$ 765,103	$ 777,615