$(document).ready(function() {

    // Find all the external links and add ext class and target attribute (if necessary)
    var $links = $("a[@href^='http:']:not([@href*='http://filosofia.fi'])");
		//var $links = $("a[@href^='http:']");
	 if(!($links == null)) {
		$links.addClass('ext');
		$links.attr('target', '_blank');
	 }
  });