Quarterly report pursuant to Section 13 or 15(d)

F. ACCRUED LIABILITIES AND EXPENSES (Details)

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F. ACCRUED LIABILITIES AND EXPENSES (Details) (USD $)
Mar. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Accrued liabilities and expenses      
Accrued liabilities and expenses $ 462,688 $ 405,073  
Accrued payroll and payroll taxes 386,055 430,871  
Accrued sales taxes, penalties, and interest 903,830 1,080,482  
Accrued interest 2,503 2,788  
Product warranties 74,943 77,943 69,743
Total accrued liabilities and expenses $ 1,830,019 $ 1,997,157