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Note 2 - Significant Accounting Policies (Detail) - Reserve for Product Warranty Activity (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Reserve for product warranty, beginning of period	$ 86,400	$ 50,000
Provision for product warranty	24,500	36,400
Product warranty expirations	(32,400)
Product warranty costs paid	(8,845)
Reserve for product warranty, end of period	$ 69,655	$ 86,400

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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