Insert GooglePlus and Facebook buttons (use the HTML5 embedding code)

social.js

/* 
 * Google Plus
 * 
 * Include Google Plus One if there is a "g-plusone" button in the page
 * 
 */
$(document).ready(function() {
	if (!$('.g-plusone').length) return;

	window.___gcfg = {lang: 'fr-FR'};

	var g = document.createElement('script');
	g.async = true;
	g.src = document.location.protocol + 'apis.google.com/js/plusone.js';
	var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(g, s);
});

/* 
 * Facebook
 * 
 * Include Facebook API if there is a "fb-like" button in the page
 * 
 */
$(document).ready(function() {
	if (!$('.fb-like').length) return;
	
	$('<div></div>').attr('class', 'fb-root').appendTo(document.body);

	var f = document.createElement('script');
	f.async = true;
	f.src = document.location.protocol + 'connect.facebook.net/fr_FR/all.js#xfbml=1';
	var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(f, s);
});

$(document).ready(function() {

/* Twitter */
var g = document.createElement('script'); g.async = true;
g.src = document.location.protocol + '//platform.twitter.com/widgets.js';
$('.tw-root').append(g);

/* G+ */
window.___gcfg = {lang: 'fr'};

var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
po.src = 'https://apis.google.com/js/plusone.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);

/* FB */
var js, fjs = document.getElementsByTagName('script')[0];
if (document.getElementById('facebook-jssdk')) {return;}
js = document.createElement('script'); js.id = 'facebook-jssdk';
js.src = "//connect.facebook.net/fr_FR/all.js#xfbml=1&appId=170266383069878";
fjs.parentNode.insertBefore(js, fjs);

});