<!-- Messenger Plug-in de chat Code -->
<div></div>
<!-- Your Plug-in de chat code -->
<div class="fb-customerchat">
</div>
<script>
var chatbox = document.getElementById('fb-customer-chat');
chatbox.setAttribute("page_id", "536764539777925");
chatbox.setAttribute("attribution", "biz_inbox");
</script>
<!-- Your SDK code -->
<script>
window.fbAsyncInit = function() {
FB.init({
xfbml : true,
version : 'v16.0'
});
};
(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 = 'https://connect.facebook.net/pt_PT/sdk/xfbml.customerchat.js';
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));
</script>