Common Stock Options and Warrants (Detail) - Warrant Activity (USD $)	3 Months Ended
	Apr. 30, 2013	Jan. 31, 2013
Warrants Outstanding, Number of Shares	9,689,000	8,814,000
Warrants Outstanding, Weighted Average Exercise Price (in Dollars per Item)	0.04	0.02
Exercisable at April 30, 2013	9,689,000
Exercisable at April 30, 2013 (in Dollars per share)	$ 0.04
Issued	875,000
Issued (in Dollars per share)	$ 0.25
Exercised
Exercised (in Dollars per share)
Expired/Cancelled
Expired/Cancelled (in Dollars per share)