/// <summary>
        /// Called whenever the progress bar needs to be updated (icon or label mouse hover).
        /// This method also handles when the user mouses over the "overall" label.
        /// </summary>
        /// <param name="skillName"></param>
        private void updateProgressBar(string skillName)
        {
            double percent = highscores.GetPercentNextLevel(skillName);
            int    rank    = highscores.GetRankForSkill(skillName);
            int    xpLeft  = highscores.GetExperienceForNextLevel(skillName);

            if (percent >= 0)
            {
                levelProgressBar.Value = (int)percent;
                progressLabel.Text     = String.Format("Progress: {0:0.##}%", percent);
                rankingLabel.Text      = $"Rank: {rank.ToString("N0")}";
                xpToLevelLabel.Text    = $"XP Left: {xpLeft.ToString("N0")}";
            }
            else
            {
                progressLabel.Text = $"Rank: {rank.ToString("N0")}";
                var tuple = highscores.GetExperienceForClosestLevel();
                rankingLabel.Text   = $"Skill closest to leveling: {tuple.Item1}";
                xpToLevelLabel.Text = $"XP Left: {tuple.Item2.ToString("N0")}";
            }
        }