function changeTo()
{
  var emElements=new Array();
  emElements = document.getElementsByTagName('em');

  for(i=0;i<emElements.length;i++)
  {
    //Element = emElements.toLowerCase();
    //alert(emElements[i].innerHTML);
    if (ordListe[emElements[i].innerHTML.toLowerCase()])
    {
      emElements[i].innerHTML='<abbr title="'+ ordListe[emElements[i].innerHTML.toLowerCase()] + '">' + emElements[i].innerHTML+'</abbr>';
    }
  }
}