var list = ['index.htm', 'mulu.htm', 'fmgs.htm', '01.htm','02.htm','03.htm', '04.htm', '05.htm', '06.htm', '07.htm', '08.htm', '09.htm', '10.htm', '11.htm','12.htm','13.htm', '14.htm', '15.htm', '16.htm', '17.htm', '18.htm', '19.htm', '20.htm', '21.htm','22.htm','23.htm', '24.htm', '25.htm', '26.htm', '27.htm', 'fengdi.htm'];
var curPage = 1;

// Ŀ¼ҳÂë
var _index = 2;
// ·âÃæÒ³Âë
var frontCover = 1;
// ·âµ×Ò³Âë
var backCover = list.length;

{
    var url = parent.location.href;
    for (var i = 0; i < backCover; i++) {
        if (url.indexOf(list[i]) > -1) {
            curPage = i + 1;
            break;
        }
    }
}

function first () {
    pageTo(frontCover);
}
function index () {
    pageTo(_index);
}
function prev () {
    pageTo(curPage - 1);
}
function next () {
    pageTo(curPage + 1);
}
function last () {
    pageTo(backCover);
}
function pageTo (page) {
    if (page < 1 || page > backCover) return;
    parent.location.href = list[page - 1];
}