flash 调整影片剪辑的滤镜属性效果

this.createEmptyMovieClip("holder_mc", 10);
holder_mc.createEmptyMovieClip("img_mc", 20);
holder_mc.img_mc.loadMovie("/images/image2.jpg");
holder_mc.filters = [new BlurFilter(10, 10, 2)];
holder_mc._x = 75;
holder_mc._y = 75;

holder_mc.onMouseMove = function() {
    var tempFilter:BlurFilter = holder_mc.filters[0];
    tempFilter.blurX = Math.floor((_xmouse / Stage.width) * 255);
    tempFilter.blurY = Math.floor((_ymouse / Stage.height) * 255);
    holder_mc.filters = [tempFilter];
};