diff --git a/lib/action.php b/lib/action.php
index 51d7e8923e..20de71aec1 100644
--- a/lib/action.php
+++ b/lib/action.php
@@ -83,6 +83,11 @@ class Action extends HTMLOutputter // lawsuit
     function prepare($argarray)
     {
         $this->args =& common_copy_args($argarray);
+
+        if ($this->boolean('ajax')) {
+            StatusNet::setAjax(true);
+        }
+
         return true;
     }
 
diff --git a/lib/error.php b/lib/error.php
index d234ab92b2..4024a9affc 100644
--- a/lib/error.php
+++ b/lib/error.php
@@ -68,7 +68,11 @@ class ErrorAction extends InfoAction
 
     function showPage()
     {
-        if ($this->minimal) {
+        if (StatusNet::isAjax()) {
+            $this->extraHeaders();
+            $this->ajaxErrorMsg();
+            exit();
+        } if ($this->minimal) {
             // Even more minimal -- we're in a machine API
             // and don't want to flood the output.
             $this->extraHeaders();
@@ -94,4 +98,27 @@ class ErrorAction extends InfoAction
     function showNoticeForm()
     {
     }
+
+    /**
+     * Show an Ajax-y error message
+     *
+     * Goes back to the browser, where it's shown in a popup.
+     *
+     * @param string $msg Message to show
+     *
+     * @return void
+     */
+
+    function ajaxErrorMsg()
+    {
+        $this->startHTML('text/xml;charset=utf-8', true);
+        $this->elementStart('head');
+        // TRANS: Page title after an AJAX error occurs on the send notice page.
+        $this->element('title', null, _('Ajax Error'));
+        $this->elementEnd('head');
+        $this->elementStart('body');
+        $this->element('p', array('id' => 'error'), $this->message);
+        $this->elementEnd('body');
+        $this->elementEnd('html');
+    }
 }
diff --git a/lib/statusnet.php b/lib/statusnet.php
index 4c2aacd8f7..648369ec44 100644
--- a/lib/statusnet.php
+++ b/lib/statusnet.php
@@ -31,6 +31,7 @@ class StatusNet
 {
     protected static $have_config;
     protected static $is_api;
+    protected static $is_ajax;
     protected static $plugins = array();
 
     /**
@@ -230,6 +231,16 @@ class StatusNet
         self::$is_api = $mode;
     }
 
+    public function isAjax()
+    {
+        return self::$is_ajax;
+    }
+
+    public function setAjax($mode)
+    {
+        self::$is_ajax = $mode;
+    }
+
     /**
      * Build default configuration array
      * @return array
diff --git a/theme/neo/css/display.css b/theme/neo/css/display.css
index 92da5977ef..b13a74d667 100644
--- a/theme/neo/css/display.css
+++ b/theme/neo/css/display.css
@@ -1144,5 +1144,38 @@ table.profile_list tr.alt {
     font-size: 0em;
 }
 
+/* Event specific styles */
+
+#form_event_rsvp #new_rsvp_data {
+    display: inline;
+    margin: 10px 0px;
+}
+
+#form_event_rsvp input.submit {
+    height: 1.6em;
+    padding: 0px 10px;
+    margin-left: 10px;
+    color:#fff;
+    font-weight: bold;
+    text-transform: uppercase;
+    font-size: 1.1em;
+    text-shadow: 0px -1px 0px rgba(0, 0, 0, 0.2);
+    border: 1px solid #d7621c;
+    border-radius: 4px;
+    -moz-border-radius: 4px;
+    -webkit-border-radius: 4px;
+    background: #FB6104;
+    background: -moz-linear-gradient(top, #ff9d63 , #FB6104);
+    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#ff9d63), color-stop(100%,#FB6104)); 
+    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ff9d63', endColorstr='#FB6104',GradientType=0 );
+}
+
+#form_event_rsvp .notice input.submit:hover {
+    text-shadow: 0px -1px 0px rgba(0, 0, 0, 0.6);
+    background: #ff9d63;
+    background: -moz-linear-gradient(top, #FB6104 , #fc8035);
+    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#FB6104), color-stop(100%,#fc8035));
+    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#FB6104', endColorstr='#fc8035',GradientType=0 );
+}
 
 }/*end of @media screen, projection, tv*/