function newwindowlinks()
{
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.target = "_blank";
}
}
window.onload = newwindowlinks;