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DERIVATIVE INSTRUMENTS (Details) (USD $)
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Jul. 31, 2012
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Apr. 30, 2012
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Jan. 31, 2012
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Oct. 31, 2011
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|---|---|---|---|---|
| Principal | $ 1,739,224 | $ 5,482,364 | $ 6,294,923 | $ 8,976,071 |
| Original Issue Discount | 26,523 | 456,547 | 1,025,966 | 1,300,347 |
| Warrant Liability | 1,265,985 | 3,090,088 | 5,527,591 | 6,391,071 |
| Embedded Derivative Liability | 2,136 | 137,749 | 741,496 | 946,046 |
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Issuance of December 2011 Notes [Member]
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| Principal | 1,232,353 | |||
| Original Issue Discount | 258,178 | |||
| Warrant Liability | 0 | |||
| Embedded Derivative Liability | 306,568 | |||
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Conversion Of Bridge Notes [Member]
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| Principal | (169,000) | |||
| Embedded Derivative Liability | 0 | |||
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Conversion of May 2011 Notes [Member]
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| Principal | (38,000) | (1,924,060) | ||
| Embedded Derivative Liability | (5,016) | (341,342) | ||
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Conversion of October 2011 Notes [Member]
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| Principal | (1,227,500) | |||
| Embedded Derivative Liability | (329,433) | |||
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Partial Note Repayments [Member]
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| Principal | (52,941) | |||
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Conversion Of Long Term Convertible Promissory Notes [Member]
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| Principal | (540,000) | |||
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Exchange Of Warrants [Member]
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| Warrant Liability | (407,501) | (134,796) | 59,572 | |
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Accreted Interest [Member]
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| Original Issue Discount | (229,392) | (569,419) | (532,559) | |
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Change In FV [Member]
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| Warrant Liability | (1,703,252) | (2,302,707) | (923,052) | |
| Embedded Derivative Liability | (20,567) | (438,054) | 159,657 | |
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Exchange Of Bridge Notes [Member]
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| Principal | (50,000) | 52,941 | ||
| Warrant Liability | (4,750) | 0 | ||
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Conversion of December 2011 Notes [Member]
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| Principal | (4,473,673) | (827,500) | ||
| Original Issue Discount | (200,632) | |||
| Embedded Derivative Liability | (115,046) | (160,677) | ||
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Issuance Of May 2012 Notes [Member]
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| Principal | 953,333 | |||
| Warrant Liability | 291,400 | |||
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Jmj Settlement Agreement [Member]
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| Principal | 540,000 | |||
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Jmj Note Conversions [Member]
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| Principal | $ (712,800) |