function autoHide() {
  if(document.addEventListener) {
    for(var a in autohide)
      autohide[a] = getE(a);
    document.addEventListener('mouseout', function(e) {
      var t = finditem(e,autohide);
      t && setattr(t,'opacity',ah_opacity[t.id][1]);
    });
    document.addEventListener('mouseover', function(e) {
      var t = finditem(e,autohide);
      t && setattr(t,'opacity',ah_opacity[t.id][0]);
    });
  }
}