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;