private void laporanLaporanToolStripMenuItem_Click(object sender, EventArgs e)
 {
     //
     if (laporan == null)
     {
         laporan             = new GUI.FLaporan();
         laporan.MdiParent   = this;
         laporan.FormClosed += new FormClosedEventHandler(Proc_LaporanClosed);
         laporan.Show();
     }
     else
     {
         laporan.Activate();
     }
 }
 //
 void Proc_LaporanClosed(Object sender, FormClosedEventArgs e)
 {
     laporan = null;
 }