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Net Loss Per Share
6 Months Ended
Jun. 30, 2011
Net loss per share [Abstract]  
Net loss per share
5.Net loss per share
  
The Company calculates net loss per share of both basic net loss per share, which is based on the weighted average number of shares outstanding, and when applicable, diluted income per share, which is based on the weighted average number of shares and dilutive potential shares outstanding.
  
For the three and six month periods ended June 30, 2011, 31,903 shares of common stock issuable upon the exercise of outstanding options and 176,798 shares issuable upon the exercise of warrants and 349,059 shares of common stock issuable upon the conversion of the convertible preferred stock were excluded from the calculation of dilutive earnings per share because the exercise of such options and warrants and the conversion of the preferred stock would be anti-dilutive.
  
For the three and six month periods ended June 30, 2010, 9,818 shares of common stock issuable upon the exercise of outstanding options and 26,184 shares issuable upon the exercise of warrants and 5,582 shares of common stock issuable upon the conversion of the convertible preferred stock were excluded from the calculation of dilutive earnings per share because the exercise of such options and warrants and the conversion of the preferred stock would be anti-dilutive.
  
The following table is a reconciliation of the numerator (net loss) and the denominator (number of shares) used in the basic and diluted EPS calculations and sets forth potential shares of common stock that are not included in the diluted net loss per share calculation as the effect is antidilutive:
  
Three Months EndedSix Months Ended
June 30,
2011
June 30,
2010
June 30,
2011
June 30,
2010
Numerator-basic and diluted net loss
$(1,362)
$(1,635)
$(3,768)
$(3,312)
Denominator-basic or diluted weighted average number of common shares outstanding191,229190,776191,267190,664
Net loss per share –basic and diluted
$(0.01)
$(0.01)
$(0.02)
$(0.02)