     {
         // Remember the original value of the target object's alpha
         origAlpha = target.alpha;
-        var revalidate:Boolean = false;
-        
         var propChanges:PropertyChanges = propertyChanges;
         
         // If nobody assigned a value, make this a "show" effect.

     *  be visible (or not) or removed (or not). 
     *  @private
     */
    override protected function endHandler(event:AnimationEvent):void
    {
        // Call super function first so we don't clobber resetting the alpha.
        super.endHandler(event);    
            
        if (restoreAlpha)
            target.alpha = origAlpha;


     *  where 0.0 means transparent and 1.0 means fully opaque.
     */
    public var alphaTo:Number;

    /**
     *  @private
     */
