Make "View Source of Frame" inherit the charset of the document in the

frame.  Bug 85346, r=ftang, sr=blizzard, a=asa

xpfe/communicator/resources/content/nsContextMenu.js

@@ -443,10 +443,11 @@ nsContextMenu.prototype = {
     },
     // Open new "view source" window with the frame's URL.
     viewFrameSource : function () {
-    window.openDialog(  "chrome://navigator/content/viewSource.xul",
-                        "_blank",
-                        "scrollbars,resizable,chrome,dialog=no",
-                        this.target.ownerDocument.location.href);
+      window.openDialog(  "chrome://navigator/content/viewSource.xul",
+                          "_blank",
+                          "scrollbars,resizable,chrome,dialog=no",
+                          this.target.ownerDocument.location.href,
+                          "charset=" + this.target.ownerDocument.characterSet);
     },
     viewInfo : function () {
       BrowserPageInfo();