function fix_external_links() { 

	if (!document.getElementsByTagName) {

		return;

	}

	var anchors = document.getElementsByTagName("a"); 

	for (var i = 0; i < anchors.length; i++) { 

		var anchor = anchors[i]; 

		if (anchor.getAttribute("rel") && anchor.getAttribute("rel") == "external") { 

			anchor.target = "_blank"; 

		}

	}

}

window.onload = fix_external_links;