Event.observe(window, 'load', onload);

function onload() {
  // Display cover images' alt tags on roll over area
  $$('a.cover img').each(function(item){
    item.observe('mouseout', function(e) { $('release_info').update(""); });
    item.observe('mouseover', function(e) { $('release_info').update(Event.element(e).getAttribute('alt').replace('|', '<br />')); });
  })
}