     {
         _exponent = value;
     }
-    
+
     /**
      * Constructor.
-     *  
-     *  @param easeInFraction The fraction of the overall duration 
+     *
+     *  @param easeInFraction The fraction of the overall duration
      *  in the acceleration phase, between 0.0 and 1.0.
      *
      *  @param exponent The exponent used in the easing calculation.
-     *  
+     *
      *  @langversion 3.0
      *  @playerversion Flash 10
      *  @playerversion AIR 1.5

{
/**
 *  The Power class defines the easing functionality using a polynomial expression.
 *  Easing consists of two phases: the acceleration, or ease in phase, 
 *  followed by the deceleration, or ease out phase. 
 *  The rate of acceleration and deceleration is based on 
 *  the <code>exponent</code> property. 
 *  The higher the value of the <code>exponent</code> property, 
 *  the greater the acceleration and deceleration. 
 *  Use the <code>easeInFraction</code> property to specify the percentage 
 *  of an animation accelerating.
 *
 *  @mxml

        return 1 - Math.pow((1 - fraction), _exponent);
    }
}
}
