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7. STOCKHOLDERS' EQUITY (Tables) - Options [Member]
12 Months Ended
Dec. 31, 2018
Summary of stock options outstanding
    December 31, 2018     December 31, 2017  
    Number of Options     Weighted Average Exercise Price     Number of Options     Weighted Average Exercise Price  
Outstanding, beginning of period     200,000     $ 0.76       200,000     $ 0.76  
Granted     120,000     $ 0.12              
Exercised                        
Outstanding, end of period     320,000     $ 0.52       200,000     $ 0.76  
Options outstanding and exercisable by price range
  Outstanding Options    

Average

Weighted

    Exercisable Options  
  Range     Number    

Remaining

Contractual

Life in Years

    Number    

Weighted

Average

Exercise Price

 
                             
  $ 0.05       20,000       2.02       20,000     $ 0.05  
  $ 0.10       20,000       9.08       20,000     $ 0.10  
  $ 0.12       100,000       4.02       100,000     $ 0.12  
  $ 0.27       40,000       6.01       40,000     $ 0.27  
  $ 0.55       100,000       7.10       100,000     $ 0.55  
  $ 2.10       40,000       1.01       40,000     $ 2.10  
            320,000       5.05       320,000     $ 0.52  
Summary of outstanding common stock warrants
    December 31, 2018     December 31, 2017  
     Number of Warrants      Weighted Average Exercise Price      Number of Warrants      Weighted Average Exercise Price  
Outstanding, beginning of period     35,501,411     $ 0.33       37,076,413     $ 0.31  
Granted     250,000       0.08       4,774,998       0.24  
Exercised     -       -       (975,000 )     0.05  
Expired     (9,200,800 )     (0.30 )     (5,375,000 )     0.13  
Outstanding, end of period     26,550,611     $ 0.34       35,501,411     $ 0.33  
Warrants outstanding and exercisable by price range
  Outstanding Warrants           Exercisable Warrants  
  Exercise Price     Number    

Average

Weighted

Remaining

Contractual

Life in Years

    Number    

Weighted

Average

Exercise Price

 
  $ 0.08       250,000       4.89       250,000     $ 0.08  
  $ 0.10       265,000       3.53       265,000     $ 0.10  
  $ 0.12       3,500,000       3.98       3,500,000     $ 0.12  
  $ 0.12       4,000,000       0.79       4,000,000     $ 0.12  
  $ 0.17       10,000       3.82       10,000     $ 0.17  
  $ 0.27       250,000       3.00       250,000     $ 0.27  
  $ 0.29       10,125,613       1.80       10,125,613     $ 0.29  
  $ 0.30       3,300,000       1.17       3,300,000     $ 0.30  
  $ 0.32       250,000       2.75       250,000     $ 0.32  
  $ 0.42       250,000       2.50       250,000     $ 0.42  
  $ 0.50       250,000       2.25       250,000     $ 0.50  
  $ 0.55       100,000       2.08       100,000     $ 0.55  
  $ 0.69       999,998       1.22       999,998     $ 0.69  
  $ 1.00       3,000,000       1.34       3,000,000     $ 1.00  
            26,550,611       2.24       26,550,611     $ 0.34