 import flash.events.Event;
 import flash.events.EventDispatcher;
 import flash.events.IEventDispatcher;
-import flash.filters.ShaderFilter;
 import flash.geom.ColorTransform;
 import flash.geom.Matrix;
 import flash.geom.Matrix3D;

import mx.graphics.shaderClasses.ColorShader;
import mx.graphics.shaderClasses.ExclusionShader;
import mx.graphics.shaderClasses.HueShader;
import mx.graphics.shaderClasses.LuminosityMaskShader;
import mx.graphics.shaderClasses.LuminosityShader;
import mx.graphics.shaderClasses.SaturationShader;
import mx.graphics.shaderClasses.SoftLightShader;

     */
    public function invalidateLayoutDirection():void
    {
        const parentElt:ILayoutDirectionElement = parent as ILayoutDirectionElement;
        if (!parentElt)
            return;
        
