jQuery(document).ready(function () {

  jQuery("a[href*='http://']:not([href*='"+location.hostname+"']),[href*='https://']:not([href*='"+location.hostname+"'])")
	.addClass("external")
	.attr("target","_blank")
	.attr("title","Opens new window")
	.after('<img src="/wp-content/themes/dg/images/external.png" alt="external link"/>');

});