Note 10. Stock Options: Schedule of Share-based Compensation, Stock Options, Activity (Details) - $ / shares	12 Months Ended
May. 31, 2015	May. 31, 2014	May. 31, 2013
Details
Outstanding	4,400,000	2,900,000	2,900,000
Weighted Average Exercise Price, Outstanding	$ 0.16	$ 0.21	$ 0.21
Granted	1,500,000
Weighted Average Exercise Price, Granted	$ 0.07

Net number of share options (or share units) granted during the period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(1)

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

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Number of options outstanding, including both vested and non-vested options.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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