function popUp(url)
{
	window.open(url, 'popup',
				'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,'
				+ 'resizable=no,copyhistory=no,width=680,height=600'
				);
}

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;