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Note 3 - Share Based Compensation (Detail) - Share-based Compensation Expenses (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Share-based compensation expense	$ 12,447	$ 20,741
Selling, General and Administrative Expenses [Member]
Share-based compensation expense	11,121	2,223
Research and Development Expense [Member]
Share-based compensation expense	$ 1,326	$ 18,518

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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