Loss per Share	3 Months Ended
Mar. 31, 2013
Loss per Share
Loss per Share	10. Loss per Share Basic and diluted net loss per share is presented in conformity with ASC Topic 260, Earnings per Share, (“ASC Topic 260”) for all periods presented. In accordance with ASC Topic 260, basic and diluted net loss per common share was determined by dividing net loss applicable to common stockholders by the weighted-average common shares outstanding during the period. Diluted weighted-average shares are the same as basic weighted-average shares because shares issuable pursuant to the exercise of stock options would be antidilutive. For the three months ended March 31, 2013 and March 31, 2012 the effect of 10,449,232 and 6,736,039, respectively outstanding stock options were excluded from the calculation of diluted loss per share because the effect was antidilutive. For the three months ended March 31, 2013 and March 31, 2012, the effect of 5,647,203 and 5,597,203 outstanding warrants were excluded from the calculation of diluted loss per share because the effect was antidilutive.

Loss per Share

3 Months Ended

Mar. 31, 2013

10. Loss per Share

Basic and diluted net loss per share is presented in conformity with ASC Topic 260, Earnings per Share, (“ASC Topic 260”) for all periods presented. In accordance with ASC Topic 260, basic and diluted net loss per common share was determined by dividing net loss applicable to common stockholders by the weighted-average common shares outstanding during the period. Diluted weighted-average shares are the same as basic weighted-average shares because shares issuable pursuant to the exercise of stock options would be antidilutive. For the three months ended March 31, 2013 and March 31, 2012 the effect of 10,449,232 and 6,736,039, respectively outstanding stock options were excluded from the calculation of diluted loss per share because the effect was antidilutive. For the three months ended March 31, 2013 and March 31, 2012, the effect of 5,647,203 and 5,597,203 outstanding warrants were excluded from the calculation of diluted loss per share because the effect was antidilutive.