/* target attribute fixed */
 window.onload = function() {
            var links = document.getElementsByTagName("a");
            for (var i = 0; i < links.length; i++) {
                var rels = links[i].getAttribute("rel");
                if (rels) {
                    var testpattern = new RegExp("external");
                    if (testpattern.test(rels)) {
                        links[i].onclick = function() {
                            return !window.open(this.href);
                        }
                    }
                }
            }
        }