diff --git a/pretalx_broadcast_tools/static/pretalx_broadcast_tools/generic.js b/pretalx_broadcast_tools/static/pretalx_broadcast_tools/generic.js
index 9d6d3ca..fa0eeba 100644
--- a/pretalx_broadcast_tools/static/pretalx_broadcast_tools/generic.js
+++ b/pretalx_broadcast_tools/static/pretalx_broadcast_tools/generic.js
@@ -87,11 +87,28 @@ function format_time_from_pretalx(from_pretalx) {
     return h + ':' + m;
 }
 
-function update_schedule() {
-    $.getJSON('../event.json', function(data) {
-        event_info = data;
+function xhr_get(url, callback_func) {
+    req = new XMLHttpRequest();
+    req.timeout = 10000;
+    req.open('GET', url);
+    req.setRequestHeader('Accept', 'application/json');
+    req.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
+    req.addEventListener('load', function(event) {
+        if (req.status != 200) {
+            return;
+        }
+
+        callback_func(event);
     });
-    $.getJSON('../schedule.json', function(data) {
+    req.send();
+}
+
+function update_schedule() {
+    xhr_get('../event.json', function() {
+        event_info = JSON.parse(req.responseText);
+    });
+    xhr_get('../schedule.json', function() {
+        data = JSON.parse(req.responseText);
         if ('error' in data) {
             console.error(data['error']);
         } else {
diff --git a/pretalx_broadcast_tools/static/pretalx_broadcast_tools/lower_thirds.js b/pretalx_broadcast_tools/static/pretalx_broadcast_tools/lower_thirds.js
index 78156d7..40f2428 100644
--- a/pretalx_broadcast_tools/static/pretalx_broadcast_tools/lower_thirds.js
+++ b/pretalx_broadcast_tools/static/pretalx_broadcast_tools/lower_thirds.js
@@ -6,42 +6,47 @@ function update_lower_third() {
         return
     }
 
-    $('#broadcast_tools_lower_thirds_box').css('background-color', event_info['color']);
+    box = document.getElementById('broadcast_tools_lower_thirds_box');
+    title = document.getElementById('broadcast_tools_lower_thirds_title').innerHTML;
+    speaker = document.getElementById('broadcast_tools_lower_thirds_speaker').innerHTML;
+    infoline = document.getElementById('broadcast_tools_lower_thirds_infoline').innerHTML;
+
+    box.style.backgroundColor = event_info['color']);
 
     if (!schedule)  {
-        $('#broadcast_tools_lower_thirds_title').text('Waiting for schedule ...')
+        title = 'Waiting for schedule ...';
         return
     }
 
     if ('error' in schedule) {
-        $('#broadcast_tools_lower_thirds_title').text('Error')
-        $('#broadcast_tools_lower_thirds_speaker').html(schedule['error'].join('<br>'));
-        $('#broadcast_tools_lower_thirds_infoline').text('');
+        title = 'Error';
+        speaker = schedule['error'].join('<br>');
+        infoline = '';
         return
     }
 
     if (schedule['rooms'].length > 1 && !schedule['rooms'].includes(room_name)) {
-        $('#broadcast_tools_lower_thirds_title').text('Error')
-        $('#broadcast_tools_lower_thirds_speaker').text('Invalid room_name. Valid names: ' + schedule['rooms'].join(', '));
-        $('#broadcast_tools_lower_thirds_infoline').text('');
+        title = 'Error';
+        speaker = 'Invalid room_name. Valid names: ' + schedule['rooms'].join(', ');
+        infoline = '';
         return
     }
 
     current_talk = get_current_talk(5);
     if (current_talk) {
-        $('#broadcast_tools_lower_thirds_title').text(current_talk['title']);
-        $('#broadcast_tools_lower_thirds_speaker').text(current_talk['persons'].join(', '));
-        $('#broadcast_tools_lower_thirds_infoline').text(current_talk['infoline']);
+        title = current_talk['title'];
+        speaker = current_talk['persons'].join(', ');
+        infoline = current_talk['infoline'];
     } else {
-        $('#broadcast_tools_lower_thirds_title').text(event_info['no_talk']);
-        $('#broadcast_tools_lower_thirds_speaker').text('');
-        $('#broadcast_tools_lower_thirds_infoline').text('');
+        title = event_info['no_talk'];
+        speaker = '';
+        infoline = '';
     }
 
     if (current_talk && current_talk['track']) {
-        $('#broadcast_tools_lower_thirds_box').css('border-bottom', '10px solid ' + current_talk['track']['color']);
+        box.style.borderBottom = '10px solid ' + current_talk['track']['color'];
     } else {
-        $('#broadcast_tools_lower_thirds_box').css('border-bottom', 'none');
+        box.style.borderBottom = 'none';
     }
 }
 window.setInterval(update_lower_third, 1000);
diff --git a/pretalx_broadcast_tools/static/pretalx_broadcast_tools/room_info.js b/pretalx_broadcast_tools/static/pretalx_broadcast_tools/room_info.js
index 740c7dc..6ca92b5 100644
--- a/pretalx_broadcast_tools/static/pretalx_broadcast_tools/room_info.js
+++ b/pretalx_broadcast_tools/static/pretalx_broadcast_tools/room_info.js
@@ -1,9 +1,3 @@
-$(function() {
-    $('#broadcast_tools_room_info_title').text('Content will appear soon.');
-    $('#broadcast_tools_room_info_speaker').text('');
-    $('#broadcast_tools_room_info_qr').text('');
-});
-
 function update_room_info() {
     room_name = get_room_name();
 
@@ -12,31 +6,37 @@ function update_room_info() {
         return
     }
 
+    box = document.getElementById('broadcast_tools_room_info');
+    roomname = document.getElementById('broadcast_tools_room_info_roomname').innerHTML;
+    title = document.getElementById('broadcast_tools_room_info_title').innerHTML;
+    speaker = document.getElementById('broadcast_tools_room_info_speaker').innerHTML;
+    qr = document.getElementById('broadcast_tools_room_info_qr').innerHTML;
+
     if (!room_name) {
-        $('#broadcast_tools_room_info_roomname').text(event_info['name']);
-        $('#broadcast_tools_room_info_title').text('Backstage');
-        $('#broadcast_tools_room_info_speaker').text('');
-        $('#broadcast_tools_room_info_qr').text('');
-        $('#broadcast_tools_room_info').css('background-color', event_info['color']);
+        roomname = event_info['name'];
+        title = 'Backstage';
+        speaker = '';
+        qr = '';
+        box.style.backgroundColor = event_info['color'];
         return
     }
 
     if (!schedule)  {
-        $('#broadcast_tools_room_info_speaker').text('Waiting for schedule ...')
+        speaker = 'Waiting for schedule ...';
         return
     }
 
     if ('error' in schedule) {
-        $('#broadcast_tools_room_info_title').text('Error')
-        $('#broadcast_tools_room_info_speaker').html(schedule['error'].join('<br>'));
-        $('#broadcast_tools_room_info_qr').text('');
+        title = 'Error';
+        speaker = schedule['error'].join('<br>');
+        qr = '';
         return
     }
 
     if (schedule['rooms'].length > 1 && !schedule['rooms'].includes(room_name)) {
-        $('#broadcast_tools_room_info_title').text('Error')
-        $('#broadcast_tools_room_info_speaker').text('Invalid room_name. Valid names: ' + schedule['rooms'].join(', '));
-        $('#broadcast_tools_room_info_qr').text('');
+        title = 'Error';
+        speaker = 'Invalid room_name. Valid names: ' + schedule['rooms'].join(', ');
+        qr = '';
         return
     }
 
@@ -54,26 +54,26 @@ function update_room_info() {
             qr_info = '';
         }
 
-        $('#broadcast_tools_room_info_roomname').text(room_name);
-        $('#broadcast_tools_room_info_title').text(current_talk['title']);
-        $('#broadcast_tools_room_info_speaker').text(current_talk['persons'].join(', '));
-        $('#broadcast_tools_room_info_qr').html(qr_info);
+        roomname = room_name;
+        title = current_talk['title'];
+        speaker = current_talk['persons'].join(', ');
+        qr = qr_info;
     } else {
-        $('#broadcast_tools_room_info_roomname').text(event_info['name']);
-        $('#broadcast_tools_room_info_title').text(room_name);
-        $('#broadcast_tools_room_info_qr').text('');
+        roomname = event_info['name'];
+        title = room_name;
+        qr = '';
 
         if (next_talk && event_info['room-info']['show_next_talk']) {
-            $('#broadcast_tools_room_info_speaker').text(format_time_from_pretalx(next_talk['start']) + ' ' + next_talk['title']);
+            speaker = format_time_from_pretalx(next_talk['start']) + ' ' + next_talk['title'];
         } else {
-            $('#broadcast_tools_room_info_speaker').text('');
+            speaker = '';
         }
     }
 
     if (current_talk && current_talk['track']) {
-        $('#broadcast_tools_room_info').css('background-color', current_talk['track']['color']);
+        box.style.backgroundColor = current_talk['track']['color'];
     } else {
-        $('#broadcast_tools_room_info').css('background-color', event_info['color']);
+        box.style.backgroundColor = event_info['color'];
     }
 }
 window.setInterval(update_room_info, 1000);