if($(window).scrollTop() >= 50){
    $('.header').addClass('onmove');
}else{
    $('.header').removeClass('onmove')
}

$(window).scroll(function(){
    if($(window).scrollTop() >= 50){
	    $('.header').addClass('onmove');
    }else{
	    $('.header').removeClass('onmove')
  		$('.header').addClass('show').removeClass('hide');
    }
});

$(document).on("mousewheel DOMMouseScroll", function (e) {
    if($(window).scrollTop() > 50){
        var delta = (e.originalEvent.wheelDelta && (e.originalEvent.wheelDelta > 0 ? 1 : -1)) || // chrome & ie
        (e.originalEvent.detail && (e.originalEvent.detail > 0 ? -1 : 1)); // firefox
        if (delta > 0) {
            //向上滚
            $('.header').addClass('show').removeClass('hide');
            $('.noupshow .header').addClass('hide').removeClass('show');//向上滚动不显示的页面
        }else if (delta < 0) {
            if(!$('.m_nav.nav-open').length){
                //向下滚
                $('.header').addClass('hide').removeClass('show');
            }
        }
    }else{
        
    }
});

var industryFn = {
    fn1:function () {
        var box = $('#fn1'),
            items = box.find('.parent');
        var Tfn = function (opts) {
            this.opt = opts || {};
            this._box = this.opt.el;
            this.items = this.opt.parent;
            this.next = this._box.find('.next');
            this.prev = this._box.find('.prev');
            this.sum  = this._box.find('.sum');
            this.num  = this._box.find('.num');
            this.list = this.items.find('li');
            this.rang = this.opt.rang||3;
            this.cur = 0;
            this.len = this.list.length;
            this.arr = [(this.len-1),this.cur,(this.cur+1)];
        };
        Tfn.prototype={
            init:function (el) {
                this.sum.text(this.len);
                this.num.text(this.cur+1);
                this.btn();
                this.choose(el);
                this._next();//自动执行一次(否则首次需要点2次)

                $('#industry .c1').text($('.box li:first').attr('title'));//默认第一个标题
            },
            btn:function () {
                var self = this;
                if(self.len==1){
                    self.prev.hide();
                    self.next.hide();
                }
                this.next.on('click',function () {
                    self._next();
                    self.num.text(self.arr[1]+1);
                    _on($('[data-num]').eq(self.arr[1]));
                    $('#industry .c1').text($(self).attr('title'));//切换标题
                });
                this.prev.on('click',function () {
                    self._prev();
                    self.num.text(self.arr[1]+1);
                    _on($('[data-num]').eq(self.arr[1]));
                    $('#industry .c1').text($(self).attr('title'));//切换标题
                });
            },
            choose:function (el) {
                var self = this;
               el.on('click',function () {
                    var that = parseInt($(this).attr('data-num'));
                    self._num(that);
                    self.num.text(self.arr[1]+1);
                   _on($('[data-num]').eq(self.arr[1]));
                });
            },
            _next:function () {
                var self = this;
                for(var key in self.arr){
                    var _this = self.arr[key];
                        _this = _this < (self.len-1) ? (_this+1) : 0;
                    self.arr[key] = _this;
                    $('#industry .c1').text($('li.on').attr('title'));//切换标题

                    switch(key){
                        case '0': 
                            self.list.eq(_this).addClass('prev-on').siblings().removeClass('prev-on');
                        break;
                        case '1': 
                            self.list.eq(_this).addClass('on').siblings().removeClass('on');
                        break;
                        default:
                            self.list.eq(_this).addClass('next-on').siblings().removeClass('next-on');
                        break;
                    }
                }
            },
            _prev:function () {
                var self = this;
                for(var key in self.arr){
                    var _this = self.arr[key];
                    _this = _this > 0 ? (_this-1) : (self.len-1);
                    self.arr[key] = _this;
                    if(key == 1){
                        self.list.eq(_this).addClass('on').siblings().removeClass('on');
                        $('#industry .c1').text($('li.on').attr('title'));//切换标题
                    }else if(key == 0){
                        self.list.eq(_this).addClass('prev-on').siblings().removeClass('prev-on');
                    }else{
                        self.list.eq(_this).addClass('next-on').siblings().removeClass('next-on');
                    }
                }
            },
            _num:function (num) {
                var self = this;
                for(var key in self.arr){
                    var _this = null;
                    if(key == 1){
                        _this = num;
                        self.list.eq(_this).addClass('on').siblings().removeClass('on');
                        $('#industry .c1').text($('li.on').attr('title'));//切换标题
                    }else if(key == 0){
                        _this = (num - 1) >= 0 ? (num-1) : (self.len-1);
                        self.list.eq(_this).addClass('prev-on').siblings().removeClass('prev-on');
                    }else{
                        _this = (num + 1)<(self.len) ? (num+1) : 0;
                        self.list.eq(_this).addClass('next-on').siblings().removeClass('next-on');
                    }
                    self.arr[key] = _this;
                }
            }
        };
        window._fn = new Tfn({
            el:box,
            parent:items,
            rang:3
        });
    },
    fn2:function () {
        var box = $('#fn2'),
            _prev = box.find('.p-prev'),
            _next = box.find('.p-next'),
            cur = 0,
            len = null,
            _item = box.find('.items');
        _prev.fadeOut();
        _item.forslide({
            item:'.col',
            step:4,
            tagName:'li',
            tagClass:'list',
            callback:function () {
                _item.find('.list').eq(0).addClass('on');
                len = _item.find('.list').length;
                if(len==1){
                    _next.hide();
                }
                _fn.init($('[data-num]'));
            }
        });
        var go_next= function () {
            cur = cur<(len-1) ? cur+1 : (len-1);
            _on(_item.find('.list').eq(cur));
        };

        var go_prev = function () {
            cur = cur>0 ? cur-1 : 0;
            _on(_item.find('.list').eq(cur));
        };
        _prev.on('click',function () {
            go_prev();
            if(cur == (len-1)){
                _next.fadeOut();
            }else{
                _next.fadeIn();
            }
            if(cur==0){
                _prev.fadeOut();
            }else{
                _prev.fadeIn();
            }
        });
        _next.on('click',function () {
            go_next();
            if(cur == (len-1)){
                _next.fadeOut();
            }else{
                _next.fadeIn();
            }
            if(cur==0){
                _prev.fadeOut();
            }else{
                _prev.fadeIn();
            }
        })
    }
};

function _on(el) {
    el.addClass('on').siblings().removeClass('on');
}

/*DOM分割*/
$.fn.forslide = function (_option) {
    _temp = ''; _html = '';
    var _setting = {
        item: '.item',
        step: 4,
        tagName: 'li',
        tagClass: '',
        clear: false,
        attr: '',
        callback: function () { }
    }
    $.extend(_setting, _option);
    o = this;
    _size = o.find(_setting.item).length;
    if (_setting.clear) { _clear = '<div class="cl"></div>'; } else { _clear = ''; }
    if (_size > _setting.step) {
        if (_size % _setting.step == 0) {
            for (_i = 0; _i < _size; _i++) {
                _temp += o.find(_setting.item + ':eq(' + _i + ')').prop('outerHTML');
                if ((_i + 1) % _setting.step == 0) {
                    _html += '<' + _setting.tagName + ' ' + _setting.attr + ' class="' + _setting.tagClass + '">' + _temp + _clear + '</' + _setting.tagName + '>';
                    _temp = '';
                }
            }
        } else {
            _page = Math.floor(_size / _setting.step);
            for (_i = 0; _i < _size; _i++) {
                _temp += o.find(_setting.item + ':eq(' + _i + ')').prop('outerHTML');
                if ((_i + 1) % _setting.step == 0 && _i + 1 <= _page * _setting.step) {
                    _html += '<' + _setting.tagName + ' ' + _setting.attr + ' class="' + _setting.tagClass + '">' + _temp + _clear + '</' + _setting.tagName + '>';
                    _temp = '';
                }
            }
            _html += '<' + _setting.tagName + ' ' + _setting.attr + ' class="' + _setting.tagClass + '">' + _temp + _clear + '</' + _setting.tagName + '>';
        }
    } else {
        _html += '<' + _setting.tagName + ' ' + _setting.attr + ' class="' + _setting.tagClass + '">' + o.html() + '</' + _setting.tagName + '>';
    }
    o.empty().append(_html);
    _setting.callback();
};