//external link styling
      $(document).ready(function() {

        $('#content-container a').filter(function() {

          return this.hostname && this.hostname !== location.hostname;

        }).after(' <img src="assets/images/icons/external.png" alt="external link"/>');

      });
//back to top
$('a.top').click(function(){
     $('html, body').animate({scrollTop: '0px'}, 300);
     return false;
});