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"; 
			} 
		}