Quarterly report pursuant to sections 13 or 15(d)

Summary of Significant Accounting Policies (Details)

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Summary of Significant Accounting Policies (Details) (USD $)
 3 Months Ended 106 Months Ended
Aug. 31, 2012
Aug. 31, 2011
Aug. 31, 2012
May 31, 2012
May 31, 2010
Class of Stock [Line Items]          
Convertible preferred stock, shares outstanding 96,100   96,100 98,900 96,100
Summary of Significant Accounting Policies (Textual) [Abstract]          
Net loss $ (2,815,166) $ (1,166,789) $ (25,647,772)    
Accumulated deficit (27,249,684)   (27,249,684)    
Working capital deficit (4,849,748)   (4,849,748)    
Cash equivalents 0   0    
Insurance coverage 250,000   250,000    
Estimated future unvested option forfeitures 0.00%        
Deferred Offering Costs 677,327   677,327 677,327  
Common stock options and warrants to purchase 9,697,664 7,473,576      
Unrecognized benefits $ 0   $ 0    
Series B convertible preferred stock [Member]
          
Class of Stock [Line Items]          
Convertible preferred stock, shares outstanding 961,000   961,000