/* Toggle the region section */
function toggleRegion(regionId) {
  var id = 'region_'+regionId;
  var image_id = 'region_image_'+regionId;
  if (document.getElementById(id).style.display == 'none') {
    document.getElementById(id).style.display = 'block';
    document.getElementById(image_id).src = '/images/css/orange_arrow_on_white_down.gif';
  } else {
    document.getElementById(id).style.display = 'none';
    document.getElementById(image_id).src = '/images/css/orange_arrow_on_white.gif';
  }
}