Note 7 - Warrants (Details) - Warrants Outstanding (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Class of Warrant or Right [Line Items]
Number of Shares (in Shares)	8,390,741	7,280,683
Number of Shares (in Shares)	2,603,329	8,158,449
Number of Shares (in Shares)
Number of Shares (in Shares)	(1,275,298)
Number of Shares (in Shares)	9,718,772	15,439,132
Minimum [Member]
Class of Warrant or Right [Line Items]
Price Range	$ 0.125	$ 0.125
Price Range	$ 0.50	$ 0.40
Price Range	$ 0.50
Price Range	$ 0.125	$ 0.125
Maximum [Member]
Class of Warrant or Right [Line Items]
Price Range	$ 1.00	$ 2.00
Price Range	$ 1.00	$ 1.00
Price Range	$ 1.00
Price Range	$ 1.00	$ 1.00