STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Total
Beginning Balance, Amount at Sep. 30, 2010	$ 204,881	$ 189,449,852	$ (161,799,968)	$ 27,854,765
Beginning Balance, Shares at Sep. 30, 2010	20,488,044
Sale of Stock, Shares	742,498
Sale of Stock, Amount	7,425	3,928,859		3,936,284
401 (k) contributions paid in common stock, Shares	29,431
401 (k) contributions paid in common stock, Amount	294	150,571		150,865
Exercise of warrants and stock options, Shares	178,660
Exercise of warrants and stock options, Amount	1,787	677,801		679,588
Stock issued to nonemployees for service, Shares	34,828
Stock issued to nonemployees for service, Amount	348	213,775		214,123
Dissmissal of liability for overpayment		81,395		81,395
Exercise of derivative liabilities		202,830		202,830
Modification of stock options and warrants		135,988		135,988
Employee option cost		1,535,329		1,535,329
Net loss			(25,712,343)	(25,712,343)
Ending Balance, Amount at Sep. 30, 2011	214,735	196,376,400	(187,512,311)	9,078,824
Ending Balance, Shares at Sep. 30, 2011	21,473,461
Sale of Stock, Shares	4,616,667
Sale of Stock, Amount	46,167	14,243,351		14,289,518
Issuance of warrants in connection with sale of common stock		(6,706,667)		(6,706,667)
401 (k) contributions paid in common stock, Shares	42,627
401 (k) contributions paid in common stock, Amount	426	154,090		154,516
Exercise of warrants and stock options, Shares	1,019,119
Exercise of warrants and stock options, Amount	10,191	2,654,348		2,664,539
Stock issued to nonemployees for service, Shares	160,618
Stock issued to nonemployees for service, Amount	1,606	556,686		558,292
Exercise of derivative liabilities		122,367		122,367
Extension of options issued to consultants		54,789		54,789
Extension of options issued to employees		36,990		36,990
Employee option cost		2,229,326		2,229,326
Non-employee option cost		22,248		22,248
Net loss			(15,477,310)	(15,477,310)
Ending Balance, Amount at Sep. 30, 2012	273,125	209,743,928	(202,989,621)	7,027,432
Ending Balance, Shares at Sep. 30, 2012	27,312,492
Sale of Stock, Shares	3,500,000
Sale of Stock, Amount	35,000	9,753,769		9,788,769
Issuance of warrants in connection with sale of common stock		(4,200,000)		(4,200,000)
401 (k) contributions paid in common stock, Shares	74,230
401 (k) contributions paid in common stock, Amount	742	158,114		158,856
Stock issued to nonemployees for service, Shares	138,297
Stock issued to nonemployees for service, Amount	1,383	359,542		360,925
Employee option cost		2,636,905		2,636,905
Non-employee option cost		98,150		98,150
Net loss			(9,170,947)	(9,170,947)
Ending Balance, Amount at Sep. 30, 2013	$ 310,250	$ 218,550,408	$ (212,160,568)	$ 6,700,090
Ending Balance, Shares at Sep. 30, 2013	31,025,019