function externalLinks() {
		if (!document.getElementsByTagName) return;
		
		var anchors = document.getElementsByTagName("a");
		
		for (var i=0; i<anchors.length; i++) {
			var anchor = anchors[i];
			anchor.tabindex = i;
			if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external")
			anchor.target = "_blank";
		}
	}