function externalLinks() {
	if (!document.getElementsByTagName) return;
 	var anchors = document.getElementsByTagName("a");
 	for (var i=0; i<anchors.length; i++) {
	  var anchor = anchors[i];
	 	if (anchor.getAttribute("href") && (anchor.getAttribute("rel") == "external" || anchor.getAttribute("rel") == "_blank")) {
	   	anchor.target = "_blank";
			anchor.title = (anchor.title != "") ? anchor.title+" (apre in nuova finestra)" : "apre in nuova finestra";
			anchor.className = (anchor.className != '') ? anchor.className+' _blank' : '_blank';
		}
	}
}
window.onload = externalLinks;