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";
		}
 	} 
}