/ Google Analytics

javascript:
  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
  })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
  ga('create', 'UA-XXXXXXXX-X', 'auto');
  ga('require', 'displayfeatures');
  ga('send', 'pageview');

/ Facebook

#fb-root
javascript:
  (function(d, s, id) {
    var js, fjs = d.getElementsByTagName(s)[0];
    if (d.getElementById(id)) return;
    js = d.createElement(s); js.id = id;
    js.src = "//connect.facebook.net/ja_JP/all.js#xfbml=1";
    fjs.parentNode.insertBefore(js, fjs);
  }(document, 'script', 'facebook-jssdk'));

/ Google+

javascript:
  window.___gcfg = {lang: 'ja'};
  (function() {
    var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
    po.src = 'https://apis.google.com/js/platform.js';
    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
  })();

/ Twitter

javascript:
  !function(d,s,id){
    var js,fjs=d.getElementsByTagName(s)[0],
        p=/^http:/.test(d.location)?'http':'https';
    if(!d.getElementById(id)){
      js=d.createElement(s);
      js.id=id;
      js.src=p+'://platform.twitter.com/widgets.js';
      fjs.parentNode.insertBefore(js,fjs);
    }
  }(document, 'script', 'twitter-wjs');