Income Taxes (Deferred Tax Assets And Liabilities) (Details) - USD ($)	Jul. 31, 2015	Jul. 31, 2014
Income Taxes [Abstract]
Net operating loss carry-forward	$ 21,330,000	$ 25,740,000
Stock options and warrants	2,570,000	1,720,000
Other temporary differences	70,000	310,000
Total deferred tax assets	23,970,000	27,770,000
Valuation allowance for deferred tax assets	$ (23,970,000)	$ (27,770,000)
Net deferred tax assets