onload=function() {
  	if(document.getElementsByTagName){
		var msg=" (Link esterno, si apre in una nuova finestra)";
		var links=document.getElementsByTagName("a");
		for (i=0;i<links.length;i++){
			var link=links[i];
			if (link.className.indexOf("targetblank")!=-1){
				link.title+=msg;
				var fn=function(){
					window.open(this.href);return false;
				}
				link.onclick=link.onkeypress=fn;
			}
		}
	}
}