2. Fair Value Measurements (Details 1) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative Liability - Common Stock Purchase Warrants	$ 726,993	$ 2,475,159
Fair Value, Inputs, Level 2 [Member]
Derivative Liability - Common Stock Purchase Warrants	344,383	983,558	93,866
Fair Value, Inputs, Level 3 [Member]
Derivative Liability - Common Stock Purchase Warrants	382,610	1,491,601
Debentures
Derivative Liability - Common Stock Purchase Warrants	10,207	85,350
Debentures | Fair Value, Inputs, Level 2 [Member]
Derivative Liability - Common Stock Purchase Warrants	10,207	85,350	26,200
Class B Preferred Stock [Member]
Derivative Liability - Common Stock Purchase Warrants	24,277	170,383
Class B Preferred Stock [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative Liability - Common Stock Purchase Warrants	24,277	170,383	67,666
Promissory Notes
Derivative Liability - Common Stock Purchase Warrants	85,824	230,985
Promissory Notes | Fair Value, Inputs, Level 2 [Member]
Derivative Liability - Common Stock Purchase Warrants	85,824	230,985
Series D Preferred Stock
Derivative Liability - Common Stock Purchase Warrants	224,075	496,840
Series D Preferred Stock | Fair Value, Inputs, Level 2 [Member]
Derivative Liability - Common Stock Purchase Warrants	224,075	496,840
Class C Preferred Stock [Member]
Derivative Liability - Common Stock Purchase Warrants	382,610	1,491,601
Class C Preferred Stock [Member] | Fair Value, Inputs, Level 3 [Member]
Derivative Liability - Common Stock Purchase Warrants	$ 382,610	$ 1,491,601	$ 869,261