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") == "external") 
     anchor.target="_blank"; 
 } 
} 
window.onload = externalLinks;

var newwindow;
function popup(url)
{
	newwindow=window.open(url,'name','height=600,width=800,left=100,top=100,menubar=0,scrollbars=1');
	if (window.focus) {newwindow.focus()}
	return false;
}