diff --git a/static/js.cookie.js b/static/js.cookie.js
new file mode 100644
index 0000000000000000000000000000000000000000..12fa0eebf46b07d7c79926b67af75ccdd381d30e
--- /dev/null
+++ b/static/js.cookie.js
@@ -0,0 +1,156 @@
+/*!
+ * JavaScript Cookie v2.1.3
+ * https://github.com/js-cookie/js-cookie
+ *
+ * Copyright 2006, 2015 Klaus Hartl & Fagner Brack
+ * Released under the MIT license
+ */
+;(function (factory) {
+	var registeredInModuleLoader = false;
+	if (typeof define === 'function' && define.amd) {
+		define(factory);
+		registeredInModuleLoader = true;
+	}
+	if (typeof exports === 'object') {
+		module.exports = factory();
+		registeredInModuleLoader = true;
+	}
+	if (!registeredInModuleLoader) {
+		var OldCookies = window.Cookies;
+		var api = window.Cookies = factory();
+		api.noConflict = function () {
+			window.Cookies = OldCookies;
+			return api;
+		};
+	}
+}(function () {
+	function extend () {
+		var i = 0;
+		var result = {};
+		for (; i < arguments.length; i++) {
+			var attributes = arguments[ i ];
+			for (var key in attributes) {
+				result[key] = attributes[key];
+			}
+		}
+		return result;
+	}
+
+	function init (converter) {
+		function api (key, value, attributes) {
+			var result;
+			if (typeof document === 'undefined') {
+				return;
+			}
+
+			// Write
+
+			if (arguments.length > 1) {
+				attributes = extend({
+					path: '/'
+				}, api.defaults, attributes);
+
+				if (typeof attributes.expires === 'number') {
+					var expires = new Date();
+					expires.setMilliseconds(expires.getMilliseconds() + attributes.expires * 864e+5);
+					attributes.expires = expires;
+				}
+
+				try {
+					result = JSON.stringify(value);
+					if (/^[\{\[]/.test(result)) {
+						value = result;
+					}
+				} catch (e) {}
+
+				if (!converter.write) {
+					value = encodeURIComponent(String(value))
+						.replace(/%(23|24|26|2B|3A|3C|3E|3D|2F|3F|40|5B|5D|5E|60|7B|7D|7C)/g, decodeURIComponent);
+				} else {
+					value = converter.write(value, key);
+				}
+
+				key = encodeURIComponent(String(key));
+				key = key.replace(/%(23|24|26|2B|5E|60|7C)/g, decodeURIComponent);
+				key = key.replace(/[\(\)]/g, escape);
+
+				return (document.cookie = [
+					key, '=', value,
+					attributes.expires ? '; expires=' + attributes.expires.toUTCString() : '', // use expires attribute, max-age is not supported by IE
+					attributes.path ? '; path=' + attributes.path : '',
+					attributes.domain ? '; domain=' + attributes.domain : '',
+					attributes.secure ? '; secure' : ''
+				].join(''));
+			}
+
+			// Read
+
+			if (!key) {
+				result = {};
+			}
+
+			// To prevent the for loop in the first place assign an empty array
+			// in case there are no cookies at all. Also prevents odd result when
+			// calling "get()"
+			var cookies = document.cookie ? document.cookie.split('; ') : [];
+			var rdecode = /(%[0-9A-Z]{2})+/g;
+			var i = 0;
+
+			for (; i < cookies.length; i++) {
+				var parts = cookies[i].split('=');
+				var cookie = parts.slice(1).join('=');
+
+				if (cookie.charAt(0) === '"') {
+					cookie = cookie.slice(1, -1);
+				}
+
+				try {
+					var name = parts[0].replace(rdecode, decodeURIComponent);
+					cookie = converter.read ?
+						converter.read(cookie, name) : converter(cookie, name) ||
+						cookie.replace(rdecode, decodeURIComponent);
+
+					if (this.json) {
+						try {
+							cookie = JSON.parse(cookie);
+						} catch (e) {}
+					}
+
+					if (key === name) {
+						result = cookie;
+						break;
+					}
+
+					if (!key) {
+						result[name] = cookie;
+					}
+				} catch (e) {}
+			}
+
+			return result;
+		}
+
+		api.set = api;
+		api.get = function (key) {
+			return api.call(api, key);
+		};
+		api.getJSON = function () {
+			return api.apply({
+				json: true
+			}, [].slice.call(arguments));
+		};
+		api.defaults = {};
+
+		api.remove = function (key, attributes) {
+			api(key, '', extend(attributes, {
+				expires: -1
+			}));
+		};
+
+		api.withConverter = init;
+
+		return api;
+	}
+
+	return init(function () {});
+}));
diff --git a/templates/base.html b/templates/base.html
index 0b5d4caae7ea805bafabd07e5fe24413b580f39d..079d5cff5fad096052542bbf37f38665cd30bf41 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -8,16 +8,19 @@
 	<head>
 		<title>Video AG</title>
 		<meta http-equiv="X-UA-Compatible" content="IE=edge">
-		<script src="{{url_for('static', filename='jquery.js')}}"></script>
-		<link rel="stylesheet" type="text/css" href="{{url_for('static', filename='style.css')}}">
-		<link rel="stylesheet" href="{{url_for('static', filename='font-awesome/css/font-awesome.min.css')}}">
 		<link rel="icon" type="image/png" href="{{url_for('static', filename='favicon.png')}}">
 		<meta http-equiv="content-language" content="de-DE">
 		<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
 		<meta charset="UTF-8">
 		<meta name="viewport" content="width=device-width, initial-scale=1">
+
 		<link href="{{url_for('static', filename='bootstrap/bootstrap.css')}}" rel="stylesheet">
+		<link rel="stylesheet" type="text/css" href="{{url_for('static', filename='style.css')}}">
+		<link rel="stylesheet" href="{{url_for('static', filename='font-awesome/css/font-awesome.min.css')}}">
+
+		<script src="{{url_for('static', filename='jquery.js')}}"></script>
 		<script src="{{url_for('static', filename='bootstrap/bootstrap.js')}}"></script>
+		<script src="{{url_for('static', filename='js.cookie.js')}}"></script>
 		{%if ismod() %}<script src="{{url_for('static', filename='moderator.js')}}"></script>{% endif %}
 	</head>
 	<body>
@@ -105,8 +108,10 @@
 					{% for msg in get_flashed_messages() %}
 					<div class="alert alert-danger" role="alert">{{ msg }}</div>
 					{% endfor %}
-					{% for msg in get_announcements(min_announcement_level) %}
+					{% for msg in get_announcements(min_announcement_level) if (not request.cookies['alert-info-'+msg.id|string]) or ismod() %}
 					<div class="alert alert-{{announcement_levels.get(msg.level, 'info')}}" role="alert">
+						<a href="#" class="close" data-dismiss="alert" aria-label="close" onclick="Cookies.set('alert-info-{{msg.id}}', '1');">&times;</a>
+
 						{{ valueeditor(('announcements',msg.id,'text'), msg.text|safe) }}
 						{% if ismod() %}
 						<div class="pull-right">