Conditional Loading of Share Tools with ResponsiveComments - http://responsivecomments.com/

share-tools.html

<ul class="share-tools" data-responsive-comment-media="(min-width: 48em)">
  <!--
  <li><div class="fb-like" data-href="http://www.digitalsurgeons.com" data-layout="box_count" data-action="like" data-show-faces="false" data-share="false"></div></li>
	<li><a href="https://twitter.com/share" class="twitter-share-button" data-url="http://www.digitalsurgeons.com" data-count="vertical">Tweet</a></li>
	<li><div class="g-plusone" data-size="tall"></div></li>-->
</ul>

share-tools.js

document.querySelector('.share-tools').addEventListener('responsiveComment', function(e) {
	twttr.widgets.load();
	FB.init({status: true, cookie: true, xfbml: true});
	gapi.plusone.render(this.querySelector('.g-plusone'));
});