Derivative Liabilities (Details) (USD $)	3 Months Ended	12 Months Ended					3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Oct. 31, 2012	Jul. 31, 2012	Aug. 31, 2011	Oct. 31, 2012 Warrant [Member]	Jul. 31, 2012 Warrant [Member]	Jul. 31, 2011 Warrant [Member]	Oct. 31, 2012 Warrants Isssued August 2012 [Member]	Jul. 31, 2012 Warrants Isssued February 2012 [Member]	Oct. 31, 2012 Additional Warrants [Member]	Jul. 31, 2012 Additional Warrants [Member]	Oct. 31, 2012 Warrant Fair Value [Member]	Jul. 31, 2012 Warrant Fair Value [Member]	Jul. 31, 2012 Warrant Exercised [Member]
Balance - Derivative warrant liability Value	$ 4,347,710		$ 8,745,508	$ 4,347,710	$ 4,081,627	$ 8,745,508
Additional warrants issued in financing		(7,230,734)					624,797	1,811,746	3,102,355	1,548,813	(3,461,069)	(793,706)	(7,230,734)
Balance - Derivative warrant liability Value	$ 3,102,355	$ 4,347,710	$ 8,745,508	$ 4,347,710	$ 4,081,627	$ 8,745,508
No. of Warrants - Derivative warrant liability	112,778,485	16,503,340		112,778,485	55,148,530	80,234,017
Warrants Issued	48,254,955	(49,863,260)					9,375,000	13,333,333	48,254,955	11,444,440
Warrants Exercised													(49,863,260)
No. of Warrants - Derivative warrant liability	131,894,033	112,778,485		112,778,485	55,148,530	80,234,017