Stockholders' Equity (Summary Of Warrant Activity) (Details) (Warrant [Member], USD $)	12 Months Ended
	Jul. 31, 2012	Jul. 31, 2011
Warrant [Member]
Outstanding, Beginning Balance	$ 188,613	$ 236,181
Issued	238,699	0
Exercised	0	(15,420)
Expired	0	(32,148)
Outstanding, Ending Balance	427,312	188,613
Warrants Outstanding, Number	$ 427,312	$ 188,613