/// <summary>
        /// this method resets the slot machine
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void _resetButton_Click(object sender, EventArgs e)
        {
            //reset credits
            NumberCreditsLabel.Text = "5000";
            _credits = 5000;

            //reset bet
            BetLabel.Text = "150";
            _bet          = 150;

            //reset jackpot
            JackpotNumberLabel.Text = "10500";
            _jackpot = 10500;

            //reset reel pictures
            Reel1PictureBox.Load("merry_christmas.png");
            Reel2PictureBox.Load("merry_christmas.png");
            Reel3PictureBox.Load("merry_christmas.png");

            //reset nightmare tallys
            _shock      = 0;
            _zero       = 0;
            _lock       = 0;
            _barrel     = 0;
            _jack       = 0;
            _sandyClaws = 0;
            _santa      = 0;
            _oogie      = 0;

            winnings = 0;
        }
        /// <summary>
        /// this function determines the bet line results and sets the reels to the appropriate image
        /// </summary>
        private void _reels()
        {
            int[]  outCome = { 0, 0, 0 };
            string picture = "";

            for (var spin = 0; spin < 3; spin++)
            {
                outCome[spin] = this.random.Next(65) + 1;

                if (_checkRange(outCome[spin], 1, 27))
                {  // 41.5% probability
                    picture = "oogie_boogie.png";
                    _oogie++;
                }
                else if (_checkRange(outCome[spin], 28, 37))
                { // 15.4% probability
                    picture = "shock.png";
                    _shock++;
                }
                else if (_checkRange(outCome[spin], 38, 46))
                { // 13.8% probability
                    picture = "zero.png";
                    _zero++;
                }
                else if (_checkRange(outCome[spin], 47, 54))
                { // 12.3% probability
                    picture = "Lock.png";
                    _lock++;
                }
                else if (_checkRange(outCome[spin], 55, 59))
                { //  7.7% probability
                    picture = "barrel.png";
                    _barrel++;
                }
                else if (_checkRange(outCome[spin], 60, 62))
                { //  4.6% probability
                    picture = "jack.png";
                    _jack++;
                }
                else if (_checkRange(outCome[spin], 63, 64))
                { //  3.1% probability
                    picture = "sandy_claws.png";
                    _sandyClaws++;
                }
                else if (_checkRange(outCome[spin], 65, 65))
                { //  1.5% probability
                    picture = "merry_christmas.png";
                    _santa++;
                }

                if (spin == 0)
                {
                    Reel1PictureBox.Load(picture);
                }
                else if (spin == 1)
                {
                    Reel2PictureBox.Load(picture);
                }
                if (spin == 2)
                {
                    Reel3PictureBox.Load(picture);
                }
            }
        }