8. Stockholders' Equity (Detail) (USD $)	6 Months Ended		12 Months Ended			91 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2010	Jan. 31, 2013
Common Stock, Shares Authorized	200,000,000		200,000,000			200,000,000
Common Stock, Par or Stated Value Per Share (in Dollars per share)	$ 0.001		$ 0.001			$ 0.001
Common Stock, Shares, Outstanding	132,761,859		126,083,416			132,761,859
Stock Issued During Period, Value, Issued for Services (in Dollars)	$ 588,325		$ 10,048,857	$ 6,118,170	$ 1,358,800
Stock Issued During Period, Value, Issued for Cash (in Dollars)			802,929	3,078,020
Allocated Share-based Compensation Expense (in Dollars)	265,833		531,250
Share-based Compensation (in Dollars)	446,000	415,833				2,004,751
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized (in Dollars)	3,219,000					3,219,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	10 months
(in Dollars)	80,000	0				241,700
(in Dollars)	80,000	0				241,700
Stock Issued October 6, 2010 [Member]
Stock Issued During Period, Shares, Issued for Services				200,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				30,000
Stock Issued October 13, 2010 [Member]
Stock Issued During Period, Shares, Issued for Services				80,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				12,000
Stock Issued November 17, 2010 [Member]
Stock Issued During Period, Shares, Issued for Cash				1,020,000
Share Price (in Dollars per share)				$ 0.25
Common Stock, Discount on Shares (in Dollars)				71,400
Stock Issued During Period, Value, Issued for Cash (in Dollars)				326,400
Stock Issued December 1, 2010 [Member]
Stock Issued During Period, Shares, Share-based Compensation, Gross				1,000,000
Number of Officers Issued Shares				1
Stock Issued During Period, Value, Share-based Compensation, Gross (in Dollars)				320,000
Stock Issued December 15, 2010 [Member]
Stock Issued During Period, Shares, Issued for Cash				800,000
Share Price (in Dollars per share)				$ 0.25
Common Stock, Discount on Shares (in Dollars)				40,000
Stock Issued During Period, Value, Issued for Cash (in Dollars)				240,000
Stock Issued December 22, 2010 [Member]
Stock Issued During Period, Shares, Issued for Services				400,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				128,000
Stock Issued January 4, 2011 [Member]
Stock Issued During Period, Shares, Issued for Cash				80,000
Share Price (in Dollars per share)				$ 0.25
Common Stock, Discount on Shares (in Dollars)				5,600
Stock Issued During Period, Value, Issued for Cash (in Dollars)				25,600
Stock Issued January 26, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				310,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				93,000
Stock Issued February 14, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				90,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				45,450
Stock Issued February 25, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				200,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				144,000
Stock Issued March 9, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				80,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				48,000
Stock Issued During Period, Shares, Issued for Cash				920,000
Share Price (in Dollars per share)				$ 0.25
Common Stock, Discount on Shares (in Dollars)				322,000
Stock Issued During Period, Value, Issued for Cash (in Dollars)				552,000
Stock Issued March 17, 2011 [Member]
Stock Issued During Period, Shares, Issued for Cash				620,000
Share Price (in Dollars per share)				$ 0.25
Common Stock, Discount on Shares (in Dollars)				303,800
Stock Issued During Period, Value, Issued for Cash (in Dollars)				458,800
Stock Issued March 25, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				250,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				197,500
Stock Issued During Period, Shares, Issued for Cash				140,000
Share Price (in Dollars per share)				$ 0.25
Common Stock, Discount on Shares (in Dollars)				75,600
Stock Issued During Period, Value, Issued for Cash (in Dollars)				110,600
Stock Issued March 29, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				400,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				260,000
Stock Issued April 5, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				800,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				544,000
Stock Issued April 7, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				200,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				122,000
Stock Issued During Period, Shares, Issued for Cash				340,000
Share Price (in Dollars per share)				$ 0.25
Common Stock, Discount on Shares (in Dollars)				85,000
Stock Issued During Period, Value, Issued for Cash (in Dollars)				207,400
Stock Issued April 20, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				680,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				462,400
Stock Issued During Period, Shares, Issued for Cash				1,680,000
Share Price (in Dollars per share)				$ 0.25
Common Stock, Discount on Shares (in Dollars)				420,000
Stock Issued During Period, Value, Issued for Cash (in Dollars)				1,142,400
Stock Issued April 27, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				1,000,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				670,000
Stock Issued April 28, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				600,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				402,000
Stock Issued April 29, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				200,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				180,000
Stock Issued May 25, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				500,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				400,000
Stock Issued June 3, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				940,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				704,800
Stock Issued June 10, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				200,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				130,000
Stock Issued July 5, 2011 [Member] | Shares Issued to CEO [Member]
Stock Issued During Period, Shares, Issued for Services				72,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				51,120
Stock Issued July 5, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				928,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				658,880
Stock Issued July 14, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				598,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				442,520
Stock Issued July 21, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services				100,000
Stock Issued During Period, Value, Issued for Services (in Dollars)				72,300
Stock Issued August 5, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services			700,000
Stock Issued During Period, Value, Issued for Services (in Dollars)			434,000
Stock Issued September 13, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services			8,900,000
Stock Issued During Period, Value, Issued for Services (in Dollars)			3,560,000
Stock Issued October 6, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services			80,000
Stock Issued During Period, Value, Issued for Services (in Dollars)			38,400
Stock Issued October 25, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services			50,000
Stock Issued During Period, Value, Issued for Services (in Dollars)			17,000
Stock Issued November 17, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services			5,200,000
Stock Issued During Period, Value, Issued for Services (in Dollars)			2,346,000
Stock Issued November 23, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services			225,000
Stock Issued During Period, Value, Issued for Services (in Dollars)			94,500
Stock Issued December 6, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services			3,100,000
Stock Issued During Period, Value, Issued for Services (in Dollars)			1,069,500
Stock Issued December 15, 2011 [Member]
Stock Issued During Period, Shares, Issued for Services			2,500,000
Stock Issued During Period, Value, Issued for Services (in Dollars)			700,000
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures			2,500,000
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures (in Dollars)			700,000
Stock Issued March 28, 2012 [Member]
Stock Issued During Period, Shares, Issued for Services			75,000
Stock Issued During Period, Value, Issued for Services (in Dollars)			7,125
Stock Issued March 28, 2012 #2 [Member]
Stock Issued During Period, Shares, Issued for Services			3,500,000
Stock Issued During Period, Value, Issued for Services (in Dollars)			332,500
Stock Issued April 5, 2012 [Member]
Stock Issued During Period, Shares, Issued for Services			6,520,000
Stock Issued During Period, Value, Issued for Services (in Dollars)			652,000
Stock Issued April 13, 2012 [Member]
Stock Issued During Period, Shares, Issued for Services			170,000
Stock Issued During Period, Value, Issued for Services (in Dollars)			15,980
Stock Issued April 17, 2012 [Member]
Stock Issued During Period, Shares, Issued for Services			1,234,568
Stock Issued During Period, Value, Issued for Services (in Dollars)			49,383
Stock Issued May 5, 2012 [Member]
Stock Issued During Period, Shares, Issued for Services			728,863
Stock Issued During Period, Value, Issued for Services (in Dollars)			102,469
Stock Issued June 28, 2012 [Member]
Stock Issued During Period, Shares, Issued for Services			945,000
Stock Issued During Period, Value, Issued for Services (in Dollars)			111,699
Stock Issued July 24, 2012 [Member]
Stock Issued During Period, Shares, Issued for Services			1,200,000
Stock Issued During Period, Value, Issued for Services (in Dollars)			186,000
Stock Issued July 30, 2012 [Member]
Stock Issued During Period, Shares, Issued for Services			2,107,237
Stock Issued During Period, Value, Issued for Services (in Dollars)			316,086
Stock Issued on August 27, 2012 [Member]
Stock Issued During Period, Shares, Issued for Services	2,000,000
Stock Issued During Period, Value, Issued for Services (in Dollars)	222,000
Stock Issued September 18, 2012 [Member]
Stock Issued During Period, Shares, Issued for Services	200,000
Stock Issued During Period, Value, Issued for Services (in Dollars)	27,000
Stock Issued October 5, 2012 [Member]
Stock Issued During Period, Shares, Issued for Services	1,069,636
Stock Issued During Period, Value, Issued for Services (in Dollars)	173,281
Stock Issued October 23, 2012 [Member]
Stock Issued During Period, Shares, Issued for Services	800,000
Stock Issued During Period, Value, Issued for Services (in Dollars)	124,000
Stock Issued November 15, 2012 [Member]
Stock Issued During Period, Shares, Issued for Services	250,000
Stock Issued During Period, Value, Issued for Services (in Dollars)	35,000
Stock Issued January 14, 2013 [Member]
Stock Issued During Period, Shares, Issued for Services	100,628
Stock Issued During Period, Value, Issued for Services (in Dollars)	7,044
Officer Options [Member]
Number of Officers Granted Options				2
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			8,000,000	7,500,000
Investment Options, Exercise Price (in Dollars per share)			$ 0.08	$ 0.60
Company Stock Price on Option Grant Date (in Dollars per share)			$ 0.057
Fair Market Value of Options Granted (in Dollars)			640,000
Share-based Compensation (in Dollars)	106,667
Options, Exercise Period			3 years
CEO Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross				1,000,000
Investment Options, Exercise Price (in Dollars per share)				$ 1.20
Share-based Compensation (in Dollars)	300,000
Officer and CEO Options [Member]
Company Stock Price on Option Grant Date (in Dollars per share)				$ 0.30
Fair Market Value of Options Granted (in Dollars)				2,550,000
Officers and Director Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	23,500,000
Investment Options, Exercise Price (in Dollars per share)	$ 0.15
Company Stock Price on Option Grant Date (in Dollars per share)	$ 0.08
Fair Market Value of Options Granted (in Dollars)	2,360,000
Share-based Compensation (in Dollars)	39,333
Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award	(i) the earliest date on which the price per sharehas traded at or above US$0.30 for at least three (3) trading days out of any ten (10) consecutive trading days; and (ii) December 30, 2017
Warrants Issued November 29, 2010 [Member]
Warrants Issued During Period, Number of Warrants				7,116,667
Investment Warrants, Exercise Price (in Dollars per share)				$ 0.25
Warrant Exercise Period				5 years
Warrants Issued December 15, 2010 [Member]
Warrants Issued During Period, Number of Warrants				1,900,000
Investment Warrants, Exercise Price (in Dollars per share)				$ 0.50
Warrants Issued March 1, 2011 [Member]
Warrants Issued During Period, Number of Warrants				920,000
Investment Warrants, Exercise Price (in Dollars per share)				$ 0.50
Warrants Issued March 15, 2011 [Member]
Warrants Issued During Period, Number of Warrants				1,760,000
Investment Warrants, Exercise Price (in Dollars per share)				$ 0.50
Warrants Issued April 25, 2011 [Member]
Warrants Issued During Period, Number of Warrants				280,000
Investment Warrants, Exercise Price (in Dollars per share)				$ 0.50
Warrants Issued May 6, 2011 [Member]
Warrants Issued During Period, Number of Warrants				200,000
Investment Warrants, Exercise Price (in Dollars per share)				$ 0.50
Warrants Issued July 8, 2011 [Member]
Warrants Issued During Period, Number of Warrants				40,000
Investment Warrants, Exercise Price (in Dollars per share)				$ 0.50
Warrants Issued July 21, 2011 [Member]
Warrants Issued During Period, Number of Warrants				100,000
Investment Warrants, Exercise Price (in Dollars per share)				$ 0.50
Warrants Issued August 5, 2011 [Member]
Warrants Issued During Period, Number of Warrants			300,000
Investment Warrants, Exercise Price (in Dollars per share)			$ 0.50
Warrants Issued August 22, 2011 [Member]
Warrants Issued During Period, Number of Warrants			50,000
Investment Warrants, Exercise Price (in Dollars per share)			$ 0.50
Warrants Issued September 6, 2011 [Member]
Warrants Issued During Period, Number of Warrants			60,000
Investment Warrants, Exercise Price (in Dollars per share)			$ 0.50
Warrants Issued September 21, 2011 [Member]
Warrants Issued During Period, Number of Warrants			200,000
Investment Warrants, Exercise Price (in Dollars per share)			$ 0.50
Warrants Issued September 27, 2011 [Member]
Warrants Issued During Period, Number of Warrants			200,000
Investment Warrants, Exercise Price (in Dollars per share)			$ 0.50
Warrants Issued October 6, 2011 [Member]
Warrants Issued During Period, Number of Warrants			200,000
Investment Warrants, Exercise Price (in Dollars per share)			$ 0.50
Warrants Issued November 1, 2011 [Member]
Warrants Issued During Period, Number of Warrants			5,300,000
Investment Warrants, Exercise Price (in Dollars per share)			$ 0.50
Warrant Exercise Period			5 years
Marketing Agreement, Guaranteed Sales			$23.4 to $27 million
WarrantsIssuedValue (in Dollars)			1,071,000
(in Dollars)	142,800
(in Dollars)	142,800
Warrants Issued March 14, 2012 [Member]
Warrants Issued During Period, Number of Warrants			8,400,000
Investment Warrants, Exercise Price (in Dollars per share)			$ 0.50
WarrantsIssuedValue (in Dollars)			378,000
(in Dollars)	18,900
(in Dollars)	$ 18,900
Warrants Issued March 28, 2012 [Member]
Warrants Issued During Period, Number of Warrants			1,500,000
Investment Warrants, Exercise Price (in Dollars per share)			$ 0.20
Warrants Issued April 5, 2012 [Member]
Warrants Issued During Period, Number of Warrants			20,000
Investment Warrants, Exercise Price (in Dollars per share)			$ 0.50
Warrants Issued May 3, 2012 [Member]
Warrants Issued During Period, Number of Warrants			428,572
Investment Warrants, Exercise Price (in Dollars per share)			$ 0.14
Warrants Issued December 31, 2012 [Member]
Warrants Issued During Period, Number of Warrants	72,500,000
Investment Warrants, Exercise Price (in Dollars per share)	$ 0.15