$(document).ready(function() {

    $('.button-collapse').sidenav({
        menuwidth: 240, // default is 240
        edge: 'right', // choose the horizontal origin
        closeonclick: true, // closes side-nav on <a> clicks, useful for angular/meteor
        draggable: true // choose whether you can drag to open on touch screens
    });
    //右侧导航
    $('.collapsible').collapsible();
    //二级菜单
    

showscroll();

function showscroll() {
    $(window).scroll(function() {
        var scrollvalue = $(window).scrolltop();
        scrollvalue > 100 ? $('li[class=back]').fadein() : $('li[class=back]').fadeout();
        scrollvalue > 100 ? $('#page-footer-gt').addclass('five') : $('#page-footer-gt').removeclass('five');
    });
    $('#back').click(function() {
        $("html,body").animate({ scrolltop: 0 }, 200);
    });
}

});