diff -up kdelibs-4.8.4/khtml/ecma/kjs_navigator.cpp.me kdelibs-4.8.4/khtml/ecma/kjs_navigator.cpp

--- kdelibs-4.8.4/khtml/ecma/kjs_navigator.cpp.me	2012-06-06 22:49:52.542044112 +0200

+++ kdelibs-4.8.4/khtml/ecma/kjs_navigator.cpp	2012-07-12 11:52:50.973049316 +0200

@@ -261,7 +261,13 @@ JSValue *Navigator::getValueProperty(Exe

   case BrowserLanguage:

   case Language:

   case UserLanguage:

-    return jsString(KGlobal::locale()->language());

+  {

+    QString l =  KGlobal::locale()->language();

+    if ( l.contains(QLatin1Char('_')) )

+      return jsString(l.replace(QLatin1Char('_'), QLatin1Char('-')));

+    else

+      return jsString(l + QLatin1Char('-') + KGlobal::locale()->country().toUpper());

+  }

   case UserAgent:

     return jsString(userAgent);

   case Platform: