private void Expander_Initialized(object sender, EventArgs e)
        {
            Expander ex = (Expander)sender;
            Tasks t = new Tasks();
            StackPanel sp = new StackPanel();

            foreach (TaskData td in t.GetTasksByCategory(ex.Header.ToString()))
            {
                if (td.IsComplete) continue;

                Label l = new Label();

                l.Content = td.Subject;
                l.MouseLeftButtonDown += new MouseButtonEventHandler(l_MouseLeftButtonDown);
                sp.Children.Add(l);
            }

            sp.Margin = new Thickness(25, 0, 0, 0);
            ex.Content = sp;
        }