Note 8 - Warrants to Purchase Common Stock (Tables)

3 Months Ended

Mar. 31, 2014

Note 11 - Warrants To Purchase Common Stock Tables

Summary of warrants issued, exercised and expired

A summary of warrants issued, exercised and expired for the three months ended March 31, 2014 follows:

	Shares			Weighted-Average Exercise Price ($)		Weighted-Average Remaining Contractual Term
Outstanding at December 31, 2013		10,486,066			1.25		2.15
Granted		502,900			0.80		4.07
Exercised		—			—		—
Expired		(17,900	)		3.00		—
Outstanding at March 31, 2014		10,971,066			0.98		1.25
Exercisable at March 31, 2014		10,971,066			0.98		1.25