/*
 $(document).ready(function(){
 $('#main-navi').slicknav({
 label:'<i class="fa fa-bars"></i>',
 closedSymbol: '<i class="fa fa-angle-right"></i>',
 openedSymbol: '<i class="fa fa-angle-down"></i>',
 duration: 200,
 'closeOnClick': true,
 });
 });
 */
// 置き換えたJSです
$(document).ready(function () {
    $('#main-navi').slicknav({
        label: '<i class="fa fa-bars"></i>',
        closedSymbol: '<i class="fa fa-angle-right"></i>',
        openedSymbol: '<i class="fa fa-angle-down"></i>',
        duration: 200,
        'closeOnClick': true,
        afterOpen: function (trigger) {
            $('span.slicknav_menutxt > i.fa').removeClass('fa-bars');
            $('span.slicknav_menutxt > i.fa').addClass('fa-times');
        },
        afterClose: function (trigger) {
            $('span.slicknav_menutxt > i.fa').removeClass('fa-times');
            $('span.slicknav_menutxt > i.fa').addClass('fa-bars');
        }
    });
});