fixes pages - tags links that do not exists

moa/plugin/system/doc/theme/static/moa.js

@@ -0,0 +1,29 @@
+function UrlExists(url) {
+	var http = new XMLHttpRequest();
+	http.open('HEAD', url, false);
+	http.send();
+	return http.status != 404;
+}
+
+window.onload = function () {
+	var winloc = window.location
+	var all = document.getElementsByTagName("a");
+	for (var i=0; i < all.length; i++) {
+		var a = all[i];
+		if (a.hostname == winloc.hostname &&
+			a.port == winloc.port &&
+			a.protocol == winloc.protocol) {
+			var url = a.getAttribute("href");
+			if (url.indexOf('category/') !== -1) {
+				newurl = url.replace('category/', 'category_')
+				a.href=newurl
+				url = newurl
+			}
+			if (a.protocol != 'file:') {
+				if (! UrlExists(url)) {
+					a.className = a.className + " moaDoesNotExist";
+				}
+			}
+		}
+	}
+}