Statement of Changes in Shareholders' Equity (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Stock subscription receivable [Member]
Shareholders' Equity Period Start at Dec. 31, 2008	$ 599,300	$ 251,400	$ 36,392,500	$ (36,044,600)	$ 0
Common Stock, Shares, Outstanding Period Start at Dec. 31, 2008		251,369,046
Stock Subscription Receivable	50,000				(50,000)
Statement of Changes in Shareholders' Equity [Roll Forward]
Issuance of common stock pursuant to exercise of stock options granted to employees for services, Shares		1,098,272
Issuance of common stock pursuant to exercise of stock options granted to employees for services, Amount	282,000	1,100	280,900
Issuance of common stock pursuant to exercise of stock options granted to professionals and consultants, Shares		8,880,400
Issuance of common stock pursuant to exercise of stock options granted to professionals and consultants, Amount	2,555,800
Stock issued for services less options issued elsewhere	2,481,500	8,900	2,472,600
Gross compensation related to stock options granted to consultant for service	74,400		74,400
Proceeds from Other Equity	158,200		158,200
Stock Issued During Period, Shares, Other		4,826,924
Stock Issued	1,346,200	4,800	1,341,400	0	0
Debt Conversion, Converted Instrument, Warrants or Options Issued		2,000,000
Proceeds from Warrant Exercises	80,000	2,000	198,000	0	(120,000)
Share based compensation related to issuance of incentive stock options	453,000	0	453,000	0	0
Net loss	(3,484,300)			(3,484,300)
Shareholders' Equity Period End at Dec. 31, 2009	2,040,300	268,200	41,371,000	(39,528,900)	(70,000)
Common Stock, Shares, Outstanding Period End at Dec. 31, 2009	268,174,642	268,174,642
Stock Subscription Receivable	70,000				(70,000)
Statement of Changes in Shareholders' Equity [Roll Forward]
Issuance of common stock pursuant to exercise of stock options granted to employees for services, Shares		910,239
Issuance of common stock pursuant to exercise of stock options granted to employees for services, Amount	288,900	900	288,000
Issuance of common stock pursuant to exercise of stock options granted to professionals and consultants, Shares		7,986,582
Issuance of common stock pursuant to exercise of stock options granted to professionals and consultants, Amount	2,383,000	8,000	2,375,000	0	0
Stock issued for services less options issued elsewhere	384,500	9,400	375,100
Share based compensation related to issuance of incentive stock options	452,000		452,000
Options exercised, Shares		9,378,048
Net loss	(3,306,800)			(3,306,800)
Shareholders' Equity Period End at Dec. 31, 2010	2,311,900	286,500	44,861,100	(42,835,700)	0
Common Stock, Shares, Outstanding Period End at Dec. 31, 2010	286,449,511	286,449,511
Stock Subscription Receivable	0
Statement of Changes in Shareholders' Equity [Roll Forward]
Issuance of common stock pursuant to exercise of stock options granted to employees for services, Shares		2,280,344
Issuance of common stock pursuant to exercise of stock options granted to employees for services, Amount	526,600	2,300	524,300
Issuance of common stock pursuant to exercise of stock options granted to professionals and consultants, Shares		7,211,585
Issuance of common stock pursuant to exercise of stock options granted to professionals and consultants, Amount	1,693,900	7,200	1,686,700
Stock Issued During Period, Shares, Other		6,082,985
Stock Issued	1,277,400	6,100	1,271,300	0
Share based compensation related to issuance of incentive stock options	699,900	0	699,900
Options exercised, Shares		6,712,280
Proceeds from stock option exercise in lieu of payroll	236,700
Net loss	(3,974,200)			(3,974,200)
Shareholders' Equity Period End at Dec. 31, 2011	$ 2,772,200	$ 308,800	$ 49,273,300	$ (46,809,900)	$ 0
Common Stock, Shares, Outstanding Period End at Dec. 31, 2011	308,736,705	308,736,705