void BMANDARCORREO_Click(object sender, EventArgs e)
{
FormCorreos.variable = "tutores";
FormCorreos Form = new FormCorreos();
Form.StartPosition = FormStartPosition.CenterScreen;
Form.Show();
}
void correosToolStripMenuItem_Click(object sender, EventArgs e)
{
cerrarFormularios();
FormCorreos Form = new FormCorreos();
Form.MdiParent = this;
Form.Show();
}