1. Summary of Significant Accounting Policies (Details - Options outstanding) - $ / shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Number of Shares
Outstanding options, beginning balance	13,135,000
Granted	1,700,000
Exercised	(312,000)	(429,300)
Forfeited	(119,000)
Outstanding options, ending balance	14,404,000
Options exercisable at the end of period	9,982,000
Weighted Average Exercise Price
Outstanding options, beginning balance	$ 4.66
Granted	3.49
Exercised	1.54
Forfeited	7.2
Outstanding options, ending balance	4.57
Options exercisable at the end of period	$ 4.71
Weighted Average Remaining Contractual Term
Weighted Average Remaining Contractual Term, ending	4 years 3 months 18 days
Options exercisable at the end of period	3 years 10 months 21 days