function init() {
createExternalLinks();
}
function createExternalLinks() {
if(document.getElementsByTagName) {
var anchors = document.getElementsByTagName('a');
for(var i=0; i<anchors.length; i++) {
var anchor = anchors[i];
if(anchor.getAttribute("href") && anchor.getAttribute('rel')=='externo') {
anchor.target = '_blank';
var title = anchor.title + 'O link será aberto em uma nova janela';
anchor.title = title;
}}}}
function addEvent(obj, evType, fn){
if(obj.addEventListener){
obj.addEventListener(evType, fn, false);
return true;
} else if (obj.attachEvent){
var r = obj.attachEvent('on'+evType, fn);
return r;
} else {
return false;
}}
addEvent(window, "load", init);
createExternalLinks()