FAIR VALUE (Details 1) (USD $)	12 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011
Expected warrant term	4 years 2 months 5 days	4 years 3 months	4 years 3 months
Risk-free rate	0.90%	0.50%	1.50%
Expected volatility	81.00%	86.00%	76.00%
Dividend yield	0.00%	0.00%	0.00%
Maximum [Member]
Estimated fair value of stock	$ 1.00	$ 3.37	$ 3.75
Expected warrant term	3 months 18 days	1 year 4 months 24 days	2 years 4 months 24 days
Risk-free rate	0.10%	0.20%	0.80%
Expected volatility	84.80%	80.00%	79.70%
Minimum [Member]
Estimated fair value of stock	$ 0.61	$ 1.00	$ 0.62
Expected warrant term	0 years	3 months 18 days	1 year 4 months 24 days
Risk-free rate	0.00%	0.10%	0.20%
Expected volatility	77.40%	77.40%	73.50%