private void lbl_stokLvalR_Click(object sender, EventArgs e)
        {
            pnl_rpots.Controls.Clear();
            Rpot_StockLeval rstokl = new Rpot_StockLeval();

            rstokl.TopLevel = false;
            rstokl.Visible  = true;
            pnl_rpots.Controls.Add(rstokl);
        }
        private void stockLevalToolStripMenuItem_Click(object sender, EventArgs e)
        {
            panelMain.Controls.Clear();
            Report_main View_rpt = new Report_main();

            View_rpt.TopLevel = false;
            View_rpt.Visible  = true;
            panelMain.Controls.Add(View_rpt);

            Report_main.pn_Rpot.Controls.Clear();
            Rpot_StockLeval rstokl = new Rpot_StockLeval();

            rstokl.TopLevel = false;
            rstokl.Visible  = true;
            Report_main.pn_Rpot.Controls.Add(rstokl);
        }