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Warrants
3 Months Ended
Mar. 31, 2012
Warrants [Text Block]
Note 7.   Warrants
 
During the three months ended March 31, 2012, there were no warrants exercised.  At March 31, 2012, the following warrants were outstanding and exercisable:
 
Warrants granted
in connection with :
 
Weighted Average
Exercise Prices
   
Number Outstanding
And Exercisable
At March 31, 2012
   
Weighted Average
Remaining Contractual Life
 
2008 Private Placement Equity Offering
  $ 3.00       1,718,350       1.05  
2010 Private Placement Equity Offering
  $ 0.21       8,553,564       1.14  
    $ 0.68       10,271,914       1.12