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STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2012

Stock-Based Compensation Tables

Weighted-Average Assumptions of Stock Based Compensation

The following weighted-average assumptions were used for grants issued during the three and six months ended June 30, 2012 and 2011 under the ASC No. 718 requirements.

		Three months ended June 30,				Six months ended June 30,
		2012		2011		2012		2011
Weighted-average risk-free rate		0.55%		1.56%		0.67%		1.60%
Weighted-average volatility		96.21%		97.63%		96.10%		97.49%
Dividend yield		0.00%		0.00%		0.00%		0.00%
Expected life		5.38 years		5.41 years		6.11 years		5.09 years

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- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (f)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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