$.getScript("/datajs/jquery.bgswitcher.js", function(){
    $('.backloop').bgSwitcher({
        images: ['https://office.super-riraku.com/dataimge/1563246191.png'], 
        interval: 3000, 
        loop: true, 
        shuffle: false, 
        effect: "fade", 
        duration: 1000, 
        easing: "linear",
    });
});