function externalLinks() {
	if (document.getElementsByTagName) {
		var list = document.getElementsByTagName('a');
		var host = window.location.hostname;
		var obj;
		for (i = 0; i < list.length; i++) {
			obj = list.item(i);
			if (obj.href && obj.href.indexOf(host) == -1) {
				obj.rel = 'external';
				obj.title = 'Externe site: ' + obj.title;
				obj.className += ' extern';
				obj.target = "_blank";
			}
		}
	}
}

window.onload = function() {
	externalLinks(); 
}