$().ready(function () {
        if (typeof (productId) != "undefined") {
            var productIds_array;
            if ($.cookie('product_history') == null) {
                productIds_array = new Array();
                productIds_array[0] = productId.toString();
           }
            else {
                productIds_array = $.cookie('product_history').split(',');
            }
            productIds_array.reverse();

            var product_history_select = jQuery.inArray(productId.toString(), productIds_array);


            if (product_history_select >= 0) {//exists
                productIds_array.splice(product_history_select, 1); //remove
            }
            else {
                if (productIds_array.length == 10)
                    productIds_array.shift();
            }
            productIds_array.push(productId);
            productIds_array.reverse();
            $.cookie('product_history', productIds_array.toString(), { expires: 7, path: '/' }); //设定根目录,可以通过删除会话cookies来重新测试
            //example $.cookie('the_cookie', 'the_value', { expires: 7, path: '/', domain: 'jquery.com', secure: true });
            //alert($.cookie('product_history'));
        }
        //load history
        if ($('#p_history_c').length > 0) {
            $.post('/ajaxhelper/recentlist.aspx', { ids: $.cookie('product_history') }, function (data) {
                $('#p_history_c').html(data);
                $('#p_history_c dd').eq($('#p_history_c dd').length - 1).css('border', 'none');
            });
        }
    });
    function ClearProductHistory()
    {   
        $.cookie('product_history', null, {path:'/'});
        $('#p_history_c').html(' ');
    }