Quarterly report pursuant to sections 13 or 15(d)

Consolidated Balance Sheets (Parenthetical)

v2.4.0.8
Consolidated Balance Sheets (Parenthetical) (USD $)
Aug. 31, 2013
May 31, 2013
Series B Convertible preferred stock, par value      
Series B Convertible preferred stock, shares issued 95,100 95,100
Series B Convertible preferred stock, shares outstanding 95,100 95,100
Common stock, par value      
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares outstanding 32,040,935 30,798,150
Common stock, shares issued 32,240,935 30,998,150
Treasury stock, shares 200,000 200,000
Series B Convertible Preferred Stock [Member]
   
Series B Convertible preferred stock, shares authorized 400,000 400,000