function expandDescription(section) {
  var entry = document.getElementById(section+"_section");
  
  if(entry.style.display=='')
    entry.style.display='block';
  else if(entry.style.display=='none')
    entry.style.display='block';
  else
    entry.style.display='none';
}

function highlightMenu(item_id) {
  var elm = document.getElementById(item_id+'_img');
  
  // If the button is already highlighted, do nothing
  if(elm.src.indexOf('easylister/s_') != -1) {
    return;
  }

  elm.src = elm.src.replace('easylister/', 'easylister/s_');
}

function unhighlightMenu(item_id) {
  var elm = document.getElementById(item_id+'_img');
  
  // If the button is already unhighlighted, do nothing
  if(elm.src.indexOf('easylister/s_') == -1) {
    return;
  }

  elm.src = elm.src.replace('easylister/s_', 'easylister/');
}