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