var nowList;
    var nextList;
    var lastList;

    function loadNext(isNext)
    {
        var which;
        if(isNext)
        {
            which = String(page + 1);
        }
        else
        {
            which = String(page - 1);
        }
        alert(which);
        $.ajax({
        url: "ajax/getArticle.ashx",
        type: "get",
        datatype: "xml",
        data:{pagesize:"10",page:which,sort:"desc"},
        success: function(result)
        {
            if(isNext)
            {
                nextList = $(result).find("test");
            }
            else
            {
                lastList = $(result).find("test");
            }
        },
        error:function(xq,ts,t)
        {
            loadNext(isNext);
        }
        });
    }
    function next()
    {
        page++;
        lastList = nowList;
        loadNext(true);
        $("#articleList").text("");
        showList();
    }