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Income taxes
6 Months Ended
Jun. 30, 2011
Income taxes  
Income taxes
10.
Income taxes
 
The Company has incurred net losses since its inception and, therefore, no current income tax liabilities have been incurred for the periods presented.  Due to the Company's losses, management has established a valuation allowance equal to the amount of net deferred tax assets since management cannot determine that realization of these benefits is more likely than not.