addEvent(window, 'load', function() {
        if (typeof compareButton!=="undefined") {
                if (document.getElementById('ppCompareTrayLink') === null && compareButton.length > 0) {
                        $('#ppproductNavi').find('ul').append('<li></li><li class="compareLink" id="ppCompareTrayLink">' + compareButton + '</li>');
                }
        }
});