private void ToolVerPrest_Click(object sender, EventArgs e)
        {
            FormVerLista fvlp = new FormVerLista(3);

            fvlp.MdiParent     = this;
            fvlp.StartPosition = FormStartPosition.CenterScreen;
            fvlp.Show();
        }
        private void ToolVerMor_Click(object sender, EventArgs e)
        {
            FormVerLista fvlm = new FormVerLista(1);

            fvlm.MdiParent     = this;
            fvlm.StartPosition = FormStartPosition.CenterScreen;
            fvlm.Show();
        }