--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/dom/OptionGroupElement.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+#include "OptionGroupElement.h"
+
+#include "Element.h"
+#include "HTMLNames.h"
+#include "HTMLOptGroupElement.h"
+#include <wtf/Assertions.h>
+
+#if ENABLE(WML)
+#include "WMLOptGroupElement.h"
+#include "WMLNames.h"
+#endif
+
+namespace WebCore {
+
+OptionGroupElement* toOptionGroupElement(Element* element)
+{
+    if (element->isHTMLElement() && element->hasTagName(HTMLNames::optgroupTag))
+        return static_cast<HTMLOptGroupElement*>(element);
+
+#if ENABLE(WML)
+    if (element->isWMLElement() && element->hasTagName(WMLNames::optgroupTag))
+        return static_cast<WMLOptGroupElement*>(element);
+#endif
+
+    return 0;
+}
+
+bool isOptionGroupElement(Element* element)
+{
+    return element->hasLocalName(HTMLNames::optgroupTag)
+#if ENABLE(WML)
+        || element->hasLocalName(WMLNames::optgroupTag)
+#endif
+        ;
+}
+
+}