Annual report pursuant to section 13 and 15(d)

Significant Accounting Policies (Details 2)

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Significant Accounting Policies (Details 2) (USD $)
12 Months Ended
Jul. 31, 2013
Jul. 31, 2012
Stock options to non-employees    
Stock-based compensation expense recognized $ 34,500  
Research and development expense | Non-employees
   
Stock options to non-employees    
Stock-based compensation expense recognized 11,000 25,000
General and administrative expense | Non-employees
   
Stock options to non-employees    
Stock-based compensation expense recognized $ 289,000 $ 133,000