Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
Current assets:
Cash	$ 258,961	$ 150,081
Accounts receivable, net	528,768	567,523
Other receivables	200,002	21,378
Inventory	940,183	786,636
Prepaid expenses and other current assets	231,119	317,510
Total current assets	2,159,033	1,843,128
Property and equipment, net	8,934	13,854
Patents, net	1,216,365	1,244,712
Other assets, net	156,956	163,711
Assets of discontinued operations – long-term	200,000	200,000
Total assets	3,741,288	3,465,405
Current liabilities:
Accounts payable	3,436,887	4,199,511
Accrued liabilities	84,232	89,730
Accrued warranty	347,490	344,990
Credit facility	500,000	500,000
Capital lease obligations – current portion		299
Derivative liability – embedded conversion feature	402,108	177,927
Current portion of long-term debt	86,910	129,839
Convertible notes – short-term	150,000	60,000
Liabilities of discontinued operations	952,609	967,928
Total current liabilities	5,960,236	6,470,224
Convertible notes, less current portion (net of discount)	730,638	382,084
Total liabilities	6,690,874	6,852,308
Commitments and contingencies (Note 17)	0	0
Stockholders’ deficit:
Common stock, $0.001 par value; 500,000,000 shares authorized; 167,705,179 and 116,339,293 shares issued and outstanding as of March 31, 2014 and December 31, 2013, respectively	167,705	116,339
Additional paid-in capital	79,653,397	78,717,997
Accumulated deficit	(83,474,422)	(83,390,026)
Total stockholders’ deficit	(3,653,320)	(4,409,466)
Total liabilities, redeemable convertible preferred stock and stockholders’ deficit	3,741,288	3,465,405
Redeemable Convertible Preferred Stock [Member] | Series C Preferred Stock [Member]
Current liabilities:
Convertible redeemable preferred stock	163,998	163,998
Redeemable Convertible Preferred Stock [Member] | Series D Preferred Stock [Member]
Current liabilities:
Convertible redeemable preferred stock	539,736	858,565
Redeemable Convertible Preferred Stock [Member] | Series B Preferred Stock [Member]
Stockholders’ deficit:
Series B convertible redeemable preferred stock, $0.001 par value; 0 and 467 shares issued and outstanding as of March 31, 2014 and December 31, 2013, respectively		$ 146,224