5. Stockholders' Deficit (Tables)

9 Months Ended

Sep. 30, 2012

Equity [Abstract]

Fair value assumptions

Assumptions	Warrants Received
Expected term (in months)		64
Expected volatility		106.7%
Risk-free interest rate		0.75%
Exercise price	$	0.74
Fair value per warrant	$	0.46

Assumptions	Series A		Series A (Affiliates)		Series B		Series C		Aug/Sep 2011 Notes		Feb 2012 PIPE
Expected life, in years		4.1		3.1		3.1		5.1		2.1		4.6
Expected annual volatility		132.0%		114.1%		114.1%		121.9%		126.6%		126.6%
Risk-free interest rate		0.4%		0.4%		0.4%		0.4%		0.4%		0.4%
Exercise price	$	0.60	$	0.60	$	0.60	$	0.60	$	0.60	$	0.60
Fair value per warrant	$	0.03	$	0.03	$	0.03	$	0.03	$	0.03	$	0.03

Options and warrants outstanding and exercisable

	Stock Options		Warrants
	Weighted		Weighted
	Average price		Average price		Total
	Shares	per share	Shares	per share	Shares	Exercisable
Balance outstanding, 12/31/2010	1,605,603	$2.49	2,681,350	$2.24	4,286,953	4,114,792
Granted	180,000	1.00	2,094,151	1.44	2,274,151
Exercised	(41,103)	1.07	—	—	(41,103)
Expired	(161,000)	2.78	—	—	(161,000)
Forfeited	(75,000)	2.57	—	—	(75,000)
Balance outstanding, 12/31/2011	1,508,500	$2.33	4,775,501	$1.35	6,284,001	6,112,335
Granted	1,896,250	0.81	2,302,470	0.60	4,198,720
Exercised	—		—	—	—
Expired	(80,000)	3.08	(116,490)	2.80	(196,490)
Forfeited	(1,644,500)	2.10	(880,980)	2.13	(2,525,480)
Balance outstanding, 9/30/2012	1,680,250	$0.81	6,080,501	$0.89	7,760,751	7,415,044

Options and warrants outstanding and exercisable price range

			Options Outstanding			Options Exercisable
				Weighted Average			Weighted Average
Range of Exercise Prices			Number of Options	Remaining Contractual Life (Years)	Exercise Price	Number of Options	Remaining Contractual Life (Years)	Exercise Price
$0.50	-	$0.59	213,750	9.8	$0.50	104,376	9.8	$0.50
0.60	-	0.99	548,000	7.3	0.60	420,000	6.6	0.60
1.00	-	1.00	918,500	4.3	1.00	810,167	3.7	1.00
$0.50	-	$1.00	1,680,250	6.0	$0.81	1,334,543	5.1	$0.84