function toggle_advanced_options() {
  var so = document.getElementById('advanced');
  var so_img = document.getElementById('js_plus_minus');
  if (so.style.display == 'block') {
    so_img.src = '/images/icon-more.gif';
    so.style.display = 'none';
  } else {
    so_img.src = '/images/icon-less.gif';
    so.style.display = 'block';
  }
}

function toggle_advanced_options_2() {
  var so = document.getElementById('advanced_2');
  var so_img = document.getElementById('js_plus_minus_2');
  if (so.style.display == 'block') {
    so_img.src = '/images/icon-more.gif';
    so.style.display = 'none';
  } else {
    so_img.src = '/images/icon-less.gif';
    so.style.display = 'block';
  }
}