【装饰】博客园背景轮播

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    //需要加载的背景图片
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    Img[7] = "https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=4189220961,2869949368&fm=26&gp=0.jpg"
    Img[8] = "https://ss1.bdstatic.com/70cFuXSh_Q1YnxGkpoWK1HF6hhy/it/u=3004924597,1854631352&fm=26&gp=0.jpg"
    Img[9] = "https://ss0.bdstatic.com/70cFuHSh_Q1YnxGkpoWK1HF6hhy/it/u=299724880,3285215622&fm=26&gp=0.jpg"
    Img[10] = "https://ss1.bdstatic.com/70cFuXSh_Q1YnxGkpoWK1HF6hhy/it/u=2326892196,580815977&fm=26&gp=0.jpg"
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        document.body.style.position = "center center" ;
        document.body.style.backgroundAttachment = "fixed";
        document.body.style.backgroundSize = "cover";
        document.body.style.backgroundImage = "URL("+Img[img]+")";
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原文地址：https://www.cnblogs.com/sangwl/p/10167675.html