Fix error/success checking for Firefox. WHY do you people still use this garbage.

Apparently, I cannot message the object once again, unless I recreate it for who the hell knows what reason.
Fuck that shit.

4chan_x.user.js

@@ -1624,18 +1624,27 @@
       init: function() {
         var code;
         code = function(e) {
-          var data, host;
+          var data, host, i, o, u;
           data = e.data;
           if (!data.changeContext) return;
           delete data.changeContext;
           host = location.hostname;
+          o = {};
+          for (i in data) {
+            u = data[i];
+            o[i] = u;
+          }
           if (host === 'boards.4chan.org') {
-            return document.getElementById('iframe').contentWindow.postMessage(data, '*');
+            return document.getElementById('iframe').contentWindow.postMessage(o, '*');
           } else if (host === 'sys.4chan.org') {
-            return parent.postMessage(data, '*');
+            return parent.postMessage(o, '*');
           }
         };
-        return window.location = "javascript:window.addEventListener('message'," + code + ",false)";
+        if (engine === 'gecko') {
+          return $.on(window, 'message', code);
+        } else {
+          return window.location = "javascript:window.addEventListener('message'," + code + ",false)";
+        }
       },
       send: function(data) {
         data.changeContext = true;

script.coffee

@@ -100,7 +100,6 @@ config =
       'Auto Update':  [true,  'Automatically fetch new posts']
     'Interval': 30
 
-
 # XXX Chrome can't into {log} = console
 # XXX GreaseMonkey can't into console.log.bind
 log = console.log.bind? console
@@ -1248,12 +1247,18 @@ qr =
         return unless data.changeContext
         delete data.changeContext
         host = location.hostname
+        o = {}
+        for i, u of data
+          o[i] = u
         if host is 'boards.4chan.org'
-          document.getElementById('iframe').contentWindow.postMessage data, '*'
+          document.getElementById('iframe').contentWindow.postMessage o, '*'
         else if host is 'sys.4chan.org'
-          parent.postMessage data, '*'
+          parent.postMessage o, '*'
       # do not wait for 4chan to load
-      window.location = "javascript:window.addEventListener('message',#{code},false)"
+      if engine is 'gecko'
+        $.on window, 'message', code
+      else
+        window.location = "javascript:window.addEventListener('message',#{code},false)"
     send: (data) ->
       data.changeContext = true
       data.qr            = true