Consolidated Balance Sheets (USD $)	Dec. 31, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 135,843	$ 98,514
Short-term investments	27,446	0
Security deposits	0	96,163
Prepaid expenses and other current assets	4,965	14,073
Total current assets	168,254	208,750
Property and equipment, net	2,475	47,674
Indemnity fund	0	115,568
Security deposits	0	88,600
Total assets	170,729	460,592
Current liabilities:
Accounts payable and accrued expenses	2,210,229	3,576,809
Convertible notes payable	21,827,588	29,000,000
Notes payable	5,900,000	4,660,000
Accrued interest payable on convertible notes	0	4,714,722
Accrued interest payable on notes payable	486,691	270,759
Accrued lease	0	65,922
Total current liabilities	30,424,508	42,288,212
Accrued lease, excluding current portion	0	30,503
Total liabilities	30,424,508	42,318,715
Commitments and contingencies (Note 12)
Series F convertible redeemable preferred stock, $.01 par value; 200,000 shares designated; 12,000 and 196,000 shares issued and outstanding at December 31, 2011 and 2010, respectively (liquidation preference of $300,000 at December 31, 2011)	348,444	5,428,158
Stockholders' deficit:
Preferred stock, $.01 par value; 1,000,000 shares authorized; 25,000 shares designated Convertible Series A, 500,000 shares designated Convertible Series D, and 800 shares designated Convertible Series E; no shares issued and outstanding at December 31, 2011 and 2010
Common stock, $.01 par value; 80,000,000 shares authorized at December 31, 2011 and 2010, 30,635,720 and 26,785,645 shares issued and outstanding at December 31, 2011 and 2010, respectively	306,357	267,856
Additional paid-in capital	166,170,855	146,611,717
Accumulated other comprehensive loss	(31,367)	0
Deficit accumulated during development stage	(197,048,068)	(194,165,854)
Total stockholders' deficit	(30,602,223)	(47,286,281)
Total liabilities and stockholders' deficit	$ 170,729	$ 460,592