Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Taxes [Abstract]

Components of net deferred tax assets

The primary components of the net deferred tax assets at December 31, 2012 and 2011 were as follows:

	2012			2011
Deferred tax assets:
Net operating loss carryforwards	$	36,111,000		$	32,580,000
Research & development and other credits		1,856,000			1,764,000
Other, net		1,066,000			596,000
Total		36,901,000			34,940,000
Valuation allowance		(36,901,000	)		(34,940,000	)
Net deferred tax assets	$	-		$	-

Income tax rate reconciliation

Income taxes differed from the amounts computed by applying the U.S. federal income tax of 34% to pretax losses from operations as a result of the following:

	Year EndedDecember 31,
	2012			2011			2010
Computed tax benefit at federal statutory rate		(34	%)		(34	%)		(34	%)
Permanent differences		3	%		(1	%)		8	%
Losses for which no benefit has been recognized		28	%		41	%		32	%
State tax benefit, net of effect on federal income taxes		-	%		(6	%)		(6	%)
Foreign rate differential		3	%		-			-
		0	%		0	%		0	%