pan.checked = true;
        tt = span.value;
        select();
    }
    function select() {

        // 选择之后，将条件放到 url 中，
        var html_condition = window.location.href + '/con';
        var html_pagination = window.location.href + '/num';
        for (var ii in obj) {
            if (obj[ii] != '') {
                html_condition += '/' + ii + '/' + obj[ii];
                html_pagination += '/' + ii + '/' + obj[ii];
            }
        }

        html_condition += '?sort=' 