Event.observe(window, 'load', function() {
  // product description fold/unfold
  $('product_description').show();
  
  $('product_description_listen').update('<img src="/images/icons/switch_minus.gif" alt="Open" />');
  
  Event.observe('product_description_listen', 'click', function(){
      $('product_description').toggle();
      if($('product_description').visible()){
          $('product_description_listen').update('<img src="/images/icons/switch_minus.gif" alt="Close" />');
      } else {
          $('product_description_listen').update('<img src="/images/icons/switch_plus.gif" alt="Open" />');
      }
  });

  // product outline fold/unfold
  //$('product_outline').hide();
  if($('product_outline_listen')){
    $('product_outline_listen').update('<img src="/images/icons/switch_plus.gif" alt="Open" />');
  
    Event.observe('product_outline_listen', 'click', function(){
        $('product_outline').toggle();
        if($('product_outline').visible()){
            $('product_outline_listen').update('<img src="/images/icons/switch_minus.gif" alt="Close" />');
        } else {
            $('product_outline_listen').update('<img src="/images/icons/switch_plus.gif" alt="Open" />');
        }
    });
  }
  
  $$(".aka_link").each(function(a) {
    var link = a;
    link.onmouseover = function(){return false}
    link.onclick = function(){
      
      var li = this.up('li');
      li.addClassName('active');
      
      var li_s = li.siblings();
      li_s.each(function(a) { a.removeClassName('active'); });
      
      var current = this.identify().gsub("_link", "");
      
      $$(".tabs_item").each(function(a) { a.hide(); }); 
       
      $(current + "_block").show();
    };
  });
});