$.getScript("/datajs/jquery.bgswitcher.js", function(){
    $('.backloop').bgSwitcher({
        images: ['http://www.sanyushoji.com/dataimge/1527037921.png'], 
        interval: 3000, 
        loop: true, 
        shuffle: false, 
        effect: "fade", 
        duration: 1000, 
        easing: "swing",
    });
});