jQuery.ui.accordion.animations.yukige_slide = function(options) {
  this.slide(options, {
    easing: "swing",
    duration: 500
  });
}
function setInactiveImageToNavs(){
  $('#globalnav').find('a img').each(function(){
                      $(this).css('visibility', 'visible');
                    }
              );
}
$(document).ready(function(){
$('#globalnav').accordion({ 
    header: '.head', 
    event: 'mouseover', 
    autoHeight: true,
    navigation: true,
    animated: 'yukige_slide'
});
$('.head, .s-head').mouseover(function(){
      setInactiveImageToNavs();
      $(this).find('> a img').css('visibility', 'hidden');
});

$('.ui-accordion-content-active > img').css('visibility', 'hidden');

if(location.href.toLowerCase().replace(/http:\/\/.+?\//, '') == '' ||
   location.href.toLowerCase().replace(/http:\/\/.+?\//, '') == ''
  ){
  $('#globalnav').accordion('activate', false);
  $('#globalnav > h3:first img').css('visibility', 'hidden');
}
});