public function testrng():void {
            var a:int;
            var b:int;
            for (var i:int = 0;i<500;i++) {
                var n:Number = Math.round(Math.random());
                if (n == 1) { a++; }
                else if (n == 0) { b++; }
            }
            trace("500 calls - 1's:" +a +"- 0's:" + b);
        }