Various cross-browser fixes.

Now working under Arora 0.5.

But not Konqueror 4.2.2 (WebSockets never connects).

IE support with excanvas still pending.

vnc.html

@@ -11,6 +11,10 @@ noVNC example: simple example using default controls
         <div id='vnc'>Loading</div>
     </body>
 
+    <!--
+    <script type='text/javascript' 
+        src='http://getfirebug.com/releases/lite/1.2/firebug-lite-compressed.js'></script>
+    -->
     <script src="include/vnc.js"></script>
     <script src="include/default_controls.js"></script>
     <script>