2. Summary of Significant Accounting Policies (Details) - shares	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Total shares that would have been anti-dilutive	35,468,815	27,990,266
Options [Member]
Total shares that would have been anti-dilutive	23,724,256	21,681,512
Warrants [Member]
Total shares that would have been anti-dilutive	9,342,892	6,308,754
Convertible Notes [Member]
Total shares that would have been anti-dilutive	2,401,667	0