window.onload = function() {
  var links = document.getElementsByTagName('A');

  for(var i = 0;i < links.length; i++) {
    if (/hendel/.test(links[i].className)) {
      links[i].onmouseover = swapImage;
      links[i].onmouseout = swapImage;
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}

function swapImage(e){
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}