var elhover = {
  start: function()
  {
    $$('.hover_element').each(function (e){
      Event.observe(e, 'mouseover', function() {e.addClassName('hover')});
      Event.observe(e, 'mouseout', function() {e.removeClassName('hover')});
      Event.observe(e, 'click', function(){
        window.parent.changeFrameClose(hover_options.id, e.getAttribute('rel'));
        return false;
      });
    });
  }
}
var hover_options = {};
Event.observe(window, 'load', elhover.start);