frontend: check in html, css, js

frontend/js/errors.js

@@ -0,0 +1,31 @@
+(function (global, document) {
+
+  // Registers a given ID for a fade out after 5 seconds.
+  global.registerHide = function(id) {
+    var el = $(id);
+
+    setTimeout(function() {
+      $(id).fadeOut("fast");
+    }, 5000);
+  }
+
+
+  // Shows a global message on the given label ID and registers it for hiding.
+  global.showGlobalMessage = function(id, text) {
+    global.textSet(id, text);
+    global.registerHide(id);
+  }
+
+
+  // Shows a global error message.
+  global.globalErrorShow = function(text) {
+    global.showGlobalMessage("#global-error", text);
+  }
+
+
+  // Shows a global success message.
+  global.globalOKShow = function(text) {
+    global.showGlobalMessage("#global-ok", text);
+  }
+
+} (window, document));