Common Stock Options and Warrants (Detail) (USD $)	3 Months Ended	6 Months Ended				12 Months Ended
	Apr. 30, 2012	Jul. 31, 2012	Aug. 31, 2012	Jun. 19, 2012	Jan. 31, 2011	Jan. 31, 2011 Private Placement [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period	2,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Per Share Weighted Average Price of Shares Purchased (in Dollars per share)	$ 0.06
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value (in Dollars)	$ 99,924
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	305.30%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	1.01%
Debt Conversion, Converted Instrument, Warrants or Options Issued						6,626,486
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)			0.02	0.05		0.12
Warrants and Rights Outstanding (in Dollars)					$ 2,859,820
Expiration Of Warrants		3,766,666
Shares, Issued				2,000,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)			6,814,000	1,000,000