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Stockholders' Deficiency (Details 1) (Warrant [Member])
9 Months Ended
Apr. 30, 2013
Warrant [Member]
 
Outstanding, August 1, 2012 74,264,078
Add: Issued 270,594,093
Less: Exercised 111,803,243
Less: Expired 175,000
Balance - Derivative warrant liability 232,879,928