import flash.filters.BlurFilter;

var frog:MovieClip;
var blurFilter:BlurFilter = new BlurFilter();
var blurX:Number = 4;
var blurY:Number = 4;
var quality:Number = 1;
function setFrogFilter():Void {
    blurFilter.blurX = blurX;
    blurFilter.blurY = blurY;
    blurFilter.quality = quality;
    frog.filters = [blurFilter];
}
setFrogFilter();