diff --git a/docs/TODO b/docs/TODO
index 23b5ed4..e8d1200 100644
--- a/docs/TODO
+++ b/docs/TODO
@@ -6,8 +6,6 @@ Short Term:
 
 - Test on IE 9 preview 3.
 
-- Test firefox 4
-
 - Fix cursor URI detection in Arora:
     - allows data URI, but doesn't actually work
 
@@ -22,7 +20,6 @@ Medium Term:
     - Configuration menu:
         - Tunable: speed vs. bandwidth selection
         - Tunable: CPU use versus latency.
-        - shared mode
         - Scaling
 
     - Keyboard menu:
diff --git a/include/default_controls.js b/include/default_controls.js
index ceb374b..071ac51 100644
--- a/include/default_controls.js
+++ b/include/default_controls.js
@@ -49,6 +49,8 @@ load: function(target) {
     html += '                type="checkbox" checked> True Color</li>';
     html += '            <li><input id="VNC_cursor"';
     html += '                type="checkbox"> Local Cursor</li>';
+    html += '            <li><input id="VNC_shared"';
+    html += '                type="checkbox"> Shared Mode</li>';
     html += '            <li><input id="VNC_connectTimeout"';
     html += '                type="input"> Connect Timeout (s)</li>';
     html += '            <hr>';
@@ -115,6 +117,7 @@ load: function(target) {
     DC.initSetting('encrypt', false);
     DC.initSetting('true_color', true);
     DC.initSetting('cursor', false);
+    DC.initSetting('shared', true);
     DC.initSetting('connectTimeout', 2);
 
     DC.rfb = RFB({'target': 'VNC_canvas',
@@ -218,6 +221,7 @@ clickSettingsMenu: function() {
             DC.updateSetting('cursor', false);
             $('VNC_cursor').disabled = true;
         }
+        DC.updateSetting('shared');
         DC.updateSetting('connectTimeout');
         DC.updateSetting('stylesheet');
         DC.updateSetting('logging');
@@ -249,6 +253,7 @@ settingsDisabled: function(disabled, rfb) {
         DefaultControls.updateSetting('cursor', false);
         $('VNC_cursor').disabled = true;
     }
+    $('VNC_shared').disabled = disabled;
     $('VNC_connectTimeout').disabled = disabled;
     //Util.Debug("<< settingsDisabled");
 },
@@ -262,6 +267,7 @@ settingsApply: function() {
     if (DC.rfb.get_canvas().get_cursor_uri()) {
         DC.saveSetting('cursor');
     }
+    DC.saveSetting('shared');
     DC.saveSetting('connectTimeout');
     DC.saveSetting('stylesheet');
     DC.saveSetting('logging');
@@ -363,6 +369,7 @@ connect: function() {
     DC.rfb.set_encrypt(DC.getSetting('encrypt'));
     DC.rfb.set_true_color(DC.getSetting('true_color'));
     DC.rfb.set_local_cursor(DC.getSetting('cursor'));
+    DC.rfb.set_shared(DC.getSetting('shared'));
     DC.rfb.set_connectTimeout(DC.getSetting('connectTimeout'));
 
     DC.rfb.connect(host, port, password);
diff --git a/include/rfb.js b/include/rfb.js
index 5a2fd13..10b4de8 100644
--- a/include/rfb.js
+++ b/include/rfb.js
@@ -39,7 +39,6 @@ var that           = {},         // Public API interface
     rfb_version    = 0,
     rfb_max_version= 3.8,
     rfb_auth_scheme= '',
-    rfb_shared     = 1,
 
 
     // In preference order
@@ -134,6 +133,7 @@ cdef('focusContainer', 'dom', document, 'Area that traps keyboard input');
 cdef('encrypt',        'bool', false, 'Use TLS/SSL/wss encryption');
 cdef('true_color',     'bool', true,  'Request true color pixel data');
 cdef('local_cursor',   'bool', false, 'Request locally rendered cursor');
+cdef('shared',         'bool', true,  'Request shared mode');
 
 cdef('connectTimeout',    'int', 2,    'Time (s) to wait for connection');
 cdef('disconnectTimeout', 'int', 3,    'Time (s) to wait for disconnection');
@@ -826,7 +826,7 @@ init_msg = function() {
             case 2:  // too-many
                 return fail("Too many auth attempts");
         }
-        send_array([rfb_shared]); // ClientInitialisation
+        send_array([conf.shared ? 1 : 0]); // ClientInitialisation
         break;
 
     case 'ServerInitialisation' :
diff --git a/vnc_auto.html b/vnc_auto.html
index 9481017..1ba90a4 100644
--- a/vnc_auto.html
+++ b/vnc_auto.html
@@ -101,9 +101,10 @@
             }
 
             rfb = new RFB({'encrypt':      WebUtil.getQueryVar('encrypt', false),
-                       'true_color':   WebUtil.getQueryVar('true_color', true),
-                       'local_cursor': WebUtil.getQueryVar('cursor', true),
-                       'updateState':  updateState});
+                           'true_color':   WebUtil.getQueryVar('true_color', true),
+                           'local_cursor': WebUtil.getQueryVar('cursor', true),
+                           'shared':       WebUtil.getQueryVar('shared', true),
+                           'updateState':  updateState});
             rfb.connect(host, port, password);
         };
         </script>