Quarterly report pursuant to Section 13 or 15(d)

2. Summary of Significant Accounting Policies (Details)

2. Summary of Significant Accounting Policies (Details)	3 Months Ended
2. Summary of Significant Accounting Policies (Details)	Mar. 31, 2015	Mar. 31, 2014
Antidilutive shares	27,153,599	27,505,958
Options [Member]
Antidilutive shares	21,761,512	20,254,908
Warrants
Antidilutive shares	5,392,087	7,251,050

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References + Details