function targetSubstitute() {
	if (!document.getElementsBySelector)
		return;
	var i = 0;
	var links = document.getElementsBySelector('a.menuExternal');
	for (i = 0; i < links.length; i++) {
		var link = links[i];
		if (link.getAttribute("href")) {
			var rel = link.getAttribute("rel");
			switch (rel) {
				case "external" :
					link.target = "_blank";
					break;
				case "internal" :
					link.target = "_self";
					break;
			}
		}
	}
}
window.onload = targetSubstitute;