SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Detail) - Black-Scholes options-pricing model	12 Months Ended
May 31, 2012	May 31, 2011
Dividend yield	0.00%	0.00%
Expected volatility	77.76-84.97%	85.97-86.42%
Risk free interest rate	0.63-0.76%	1.87-2.27%
Expected life	3.25-3.75 years	3.75 years

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph e(2)(c)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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