private void button3_Click(object sender, EventArgs e)
        {
            if (pan[1] == false)
            {
                panel7.Width = 150;
                panel8.Left = panel7.Left + panel7.Width + 1;
                panel9.Left = panel8.Left + panel8.Width + 1;
                panel10.Left = panel9.Left + panel9.Width + 1;
                panel11.Left = panel10.Left + panel10.Width + 1;
                panel12.Left = panel11.Left + panel11.Width + 1;
                panel13.Left = panel12.Left + panel12.Width + 1;
                button3.Text = "<";
                label4.Visible = true;
                comboBox6.Visible = true;
                comboBox6.Focus();

            }
            else
            {
                panel7.Width = 50;
                panel8.Left = panel7.Left + panel7.Width + 1;
                panel9.Left = panel8.Left + panel8.Width + 1;
                panel10.Left = panel9.Left + panel9.Width + 1;
                panel11.Left = panel10.Left + panel10.Width + 1;
                panel12.Left = panel11.Left + panel11.Width + 1;
                panel13.Left = panel12.Left + panel12.Width + 1;
                button3.Text = ">";
                label4.Visible = false;
                comboBox6.Visible = false;

            }
            pan[1] = !pan[1];
            comboBox6.Text = "";
            ControlWidth();
        }

        private void ControlWidth()
        {
            int i=0;
            i = panel6.Width;
            i = i + panel7.Width;
            i = i + panel8.Width;
            i = i+panel9.Width;
            i = i + panel10.Width;
            i = i + panel11.Width;
            i = i + panel12.Width;
            i=i+panel13.Width+10;
            this.Width = i + 1;
            if (this.Width < FirstWidth)
                this.Width = FirstWidth;

        }