XML 30 R12.htm IDEA: XBRL DOCUMENT v2.4.0.6
Inventories
6 Months Ended
Nov. 30, 2011
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]
7.  Inventories

 

Inventories consist of the following:

 

    November 30, 2011     May 31, 2011  
Raw materials   $ 593,760     $ 348,102  
    $ 593,760     $ 348,102