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;

function popup(url, wwidth, wheight) {
  	fen = window.open(url,"popup","toolbar=no,location=no,scrollbars=no,directories=no,status=no,resizable=no,copyhistory=no,width="+wwidth+",height="+wheight);
}