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diff --git a/WebCore/css/CSSMediaRule.cpp b/WebCore/css/CSSMediaRule.cpp
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+/**
+ * This file is part of the DOM implementation for KDE.
+ *
+ * (C) 1999-2003 Lars Knoll (knoll@kde.org)
+ * (C) 2002-2003 Dirk Mueller (mueller@kde.org)
+ * Copyright (C) 2002, 2005, 2006 Apple Computer, Inc.
+ * Copyright (C) 2006 Samuel Weinig (sam@webkit.org)
+ *
+ * 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 "CSSMediaRule.h"
+
+#include "CSSParser.h"
+#include "ExceptionCode.h"
+
+namespace WebCore {
+
+CSSMediaRule::CSSMediaRule(CSSStyleSheet* parent, PassRefPtr<MediaList> media, PassRefPtr<CSSRuleList> rules)
+    : CSSRule(parent)
+    , m_lstMedia(media)
+    , m_lstCSSRules(rules)
+{
+}
+
+CSSMediaRule::~CSSMediaRule()
+{
+    if (m_lstMedia)
+        m_lstMedia->setParent(0);
+
+    int length = m_lstCSSRules->length();
+    for (int i = 0; i < length; i++)
+        m_lstCSSRules->item(i)->setParent(0);
+}
+
+unsigned CSSMediaRule::append(CSSRule* rule)
+{
+    if (!rule)
+        return 0;
+
+    rule->setParent(this);
+    return m_lstCSSRules->insertRule(rule, m_lstCSSRules->length());
+}
+
+unsigned CSSMediaRule::insertRule(const String& rule, unsigned index, ExceptionCode& ec)
+{
+    if (index > m_lstCSSRules->length()) {
+        // INDEX_SIZE_ERR: Raised if the specified index is not a valid insertion point.
+        ec = INDEX_SIZE_ERR;
+        return 0;
+    }
+
+    CSSParser p(useStrictParsing());
+    RefPtr<CSSRule> newRule = p.parseRule(parentStyleSheet(), rule);
+    if (!newRule) {
+        // SYNTAX_ERR: Raised if the specified rule has a syntax error and is unparsable.
+        ec = SYNTAX_ERR;
+        return 0;
+    }
+
+    if (newRule->isImportRule()) {
+        // FIXME: an HIERARCHY_REQUEST_ERR should also be thrown for a @charset or a nested
+        // @media rule.  They are currently not getting parsed, resulting in a SYNTAX_ERR
+        // to get raised above.
+
+        // HIERARCHY_REQUEST_ERR: Raised if the rule cannot be inserted at the specified
+        // index, e.g., if an @import rule is inserted after a standard rule set or other
+        // at-rule.
+        ec = HIERARCHY_REQUEST_ERR;
+        return 0;
+    }
+
+    newRule->setParent(this);
+    unsigned returnedIndex = m_lstCSSRules->insertRule(newRule.get(), index);
+
+    // stylesheet() can only return 0 for computed style declarations.
+    stylesheet()->styleSheetChanged();
+
+    return returnedIndex;
+}
+
+void CSSMediaRule::deleteRule(unsigned index, ExceptionCode& ec)
+{
+    if (index >= m_lstCSSRules->length()) {
+        // INDEX_SIZE_ERR: Raised if the specified index does not correspond to a
+        // rule in the media rule list.
+        ec = INDEX_SIZE_ERR;
+        return;
+    }
+
+    m_lstCSSRules->deleteRule(index);
+
+    // stylesheet() can only return 0 for computed style declarations.
+    stylesheet()->styleSheetChanged();
+}
+
+String CSSMediaRule::cssText() const
+{
+    String result = "@media ";
+    if (m_lstMedia) {
+        result += m_lstMedia->mediaText();
+        result += " ";
+    }
+    result += "{ \n";
+
+    if (m_lstCSSRules) {
+        unsigned len = m_lstCSSRules->length();
+        for (unsigned i = 0; i < len; i++) {
+            result += "  ";
+            result += m_lstCSSRules->item(i)->cssText();
+            result += "\n";
+        }
+    }
+
+    result += "}";
+    return result;
+}
+
+} // namespace WebCore