$.getScript("/datajs/jquery.bgswitcher.js", function(){
    $('.backloop').bgSwitcher({
        images: ['https://totsuka.chiiki-support.jp/dataimge/1552377581.jpg','https://totsuka.chiiki-support.jp/dataimge/1552377587.jpg'], 
        interval: 3000, 
        loop: true, 
        shuffle: false, 
        effect: "fade", 
        duration: 1000, 
        easing: "linear",
    });
});