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";
		}
		
	}
}