function external_links() {
  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";
    }
}

function popitup(url) {
	newwindow=window.open(url,'name','height=760,width=600, toolbar=yes, scrollbars=yes');
	if (window.focus) {newwindow.focus()}
	return false;
}


window.onload = function(){
    external_links();
}