function setupRollovers() {
  if(!document.getElementsByTagName)
    return;

  var all_links = document.getElementsByTagName('a');
  
  for (var i = 0; i < all_links.length; i++) {
    var link = all_links[i];
    if (link.className && (' ' + link.className + ' ').indexOf(' rollover ') != -1) {
      if (link.childNodes && link.childNodes.length == 1 && link.childNodes[0].nodeName.toLowerCase() == 'img') {
        link.onmouseover = ROmouseover;
        link.onmouseout = ROmouseout;
      }
    }
  }
}

function ROmouseover(e) {
  var target = findTarget(e);
  if (!target) return;

  var img_tag = target.childNodes[0];
  img_tag.src = img_tag.src.replace('.0.', '.1.');
}

function ROmouseout(e) {
  var target = findTarget(e);
  if (!target) return;

  var img_tag = target.childNodes[0];
  img_tag.src = img_tag.src.replace('.1.', '.0.');
}

addToBoot(setupRollovers);