function winopen(theURL,winName,features) { 
window.open(theURL,winName,features);
}
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") &&
anchor.getAttribute("rel").indexOf("external") >= 0)
anchor.target = "_blank";
}
}
window.onload = externalLinks;