Note 3 - Fair Value of Financial Instruments (Details) - Fair value hierarchy for its financial liabilities: (USD $)	Jun. 30, 2013		Jun. 30, 2012
Liabilities:
Compensatory stock options not yet issued (1)	$ 63,838	[1]
Accrued warrant liability	4,757,770		4,105,659
Total liabilities	4,821,608		4,105,659
Fair Value, Inputs, Level 1 [Member]
Liabilities:
Compensatory stock options not yet issued (1)		[1]
Fair Value, Inputs, Level 2 [Member]
Liabilities:
Compensatory stock options not yet issued (1)		[1]
Fair Value, Inputs, Level 3 [Member]
Liabilities:
Compensatory stock options not yet issued (1)	63,838	[1]
Accrued warrant liability	4,757,770		4,105,659
Total liabilities	$ 4,821,608		$ 4,105,659

[1] Included in accrued expenses in the accompanying consolidated balance sheets.