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Trade Receivables (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Summary of trade receivables        
Trade Receivables $ 66,170 $ 242,867    
Provision for doubtful accounts 2,000 2,000    
Total $ 64,170 $ 240,867 $ 705,225 $ 274,802