Condensed Consolidated Statements of Operations (Unaudited) (USD $)	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Income Statement [Abstract]
GRANT INCOME AND OTHER	$ 254,610	$ 956,154	$ 153,300
OPERATING EXPENSES:
Research and development (excluding R&D depreciation of $445,710, $438,738 and $434,030 respectively, included below)	10,368,695	11,745,629	11,911,626
Depreciation and amortization	533,468	531,316	516,117
General and administrative	6,595,287	6,664,883	6,285,810
Total operating expenses	17,497,450	18,941,828	18,713,553
OPERATING LOSS	(17,242,840)	(17,985,674)	(18,560,253)
OTHER EXPENSES		(12,000,000)
GAIN ON DERIVATIVE INSTRUMENTS	1,911,683	4,432,148	28,843,772
INTEREST INCOME	116,061	164,163	362,236
INTEREST EXPENSE	(262,214)	(322,980)	(162,326)
NET (LOSS)/INCOME	(15,477,310)	(25,712,343)	10,483,429
ISSUANCE OF ADDITIONAL SHARES DUE TO RESET PROVISIONS	(250,000)
MODIFICATION OF WARRANTS	(325,620)	(1,068,369)	(1,532,456)
INDUCEMENT WARRANTS	(1,593,000)
NET LOSS AVAILABLE TO COMMON SHAREHOLDERS	$ (17,645,930)	$ (26,780,712)	$ 8,950,973
NET LOSS PER COMMON SHARE-BASIC	$ (0.07)	$ (0.13)	$ 0.04
NET LOSS PER COMMON SHARE-DILUTED	$ (0.07)	$ (0.15)	$ (0.06)
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING-BASIC	251,836,540	208,488,987	202,102,859
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING-DILUTED	251,836,540	208,488,987	202,102,859