function toggle_menu_info() {
  if (document.getElementById('important_info').style.visibility == 'visible') {
	  document.getElementById('important_info').style.visibility = 'hidden';
	} else {
    if (document.getElementById('important_info').style.visibility == 'hidden') {
	  document.getElementById('important_info').style.visibility = 'visible';
	  }
	}
}
function show_menu_info() {
  document.getElementById('important_info').style.visibility = 'visible';
}
function hide_menu_info() {
  document.getElementById('important_info').style.visibility = 'hidden';
}