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diff --git a/Source/WebCore/css/WebKitCSSKeyframesRule.cpp b/Source/WebCore/css/WebKitCSSKeyframesRule.cpp
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+++ b/Source/WebCore/css/WebKitCSSKeyframesRule.cpp
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+/*
+ * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+ */
+
+#include "config.h"
+#include "WebKitCSSKeyframesRule.h"
+
+#include "CSSMutableStyleDeclaration.h"
+#include "CSSParser.h"
+#include "CSSRuleList.h"
+#include "StyleSheet.h"
+#include "WebKitCSSKeyframeRule.h"
+
+namespace WebCore {
+
+WebKitCSSKeyframesRule::WebKitCSSKeyframesRule(CSSStyleSheet* parent)
+    : CSSRule(parent)
+    , m_lstCSSRules(CSSRuleList::create())
+{
+}
+
+WebKitCSSKeyframesRule::~WebKitCSSKeyframesRule()
+{
+    int length = m_lstCSSRules->length();
+    if (length == 0)
+        return;
+        
+    for (int i = 0; i < length; i++) {
+        if (m_lstCSSRules->item(i)->isKeyframeRule()) {
+            if (CSSMutableStyleDeclaration* style = static_cast<WebKitCSSKeyframeRule*>(m_lstCSSRules->item(i))->style())
+                style->setParent(0);
+        }
+        m_lstCSSRules->item(i)->setParent(0);
+    }
+}
+
+String WebKitCSSKeyframesRule::name() const
+{
+    return m_name;
+}
+
+void WebKitCSSKeyframesRule::setName(const String& name)
+{
+    m_name = name;
+    
+    // Since the name is used in the keyframe map list in CSSStyleSelector, we need
+    // to recompute the style sheet to get the updated name.
+    stylesheet()->styleSheetChanged();
+}
+
+unsigned WebKitCSSKeyframesRule::length() const
+{
+    return m_lstCSSRules.get()->length();
+}
+
+WebKitCSSKeyframeRule* WebKitCSSKeyframesRule::item(unsigned index)
+{
+    CSSRule* rule = m_lstCSSRules.get()->item(index);
+    return (rule && rule->isKeyframeRule()) ? static_cast<WebKitCSSKeyframeRule*>(rule) : 0;
+}
+
+const WebKitCSSKeyframeRule* WebKitCSSKeyframesRule::item(unsigned index) const
+{
+    CSSRule* rule = m_lstCSSRules.get()->item(index);
+    return (rule && rule->isKeyframeRule()) ? static_cast<const WebKitCSSKeyframeRule*>(rule) : 0;
+}
+
+void WebKitCSSKeyframesRule::append(WebKitCSSKeyframeRule* rule)
+{
+    m_lstCSSRules.get()->append(rule);
+}
+
+void WebKitCSSKeyframesRule::insertRule(const String& rule)
+{
+    CSSParser p(useStrictParsing());
+    RefPtr<CSSRule> newRule = p.parseKeyframeRule(parentStyleSheet(), rule);
+    if (newRule.get() && newRule.get()->isKeyframeRule())
+        append(static_cast<WebKitCSSKeyframeRule*>(newRule.get()));
+}
+
+void WebKitCSSKeyframesRule::deleteRule(const String& s)
+{
+    int i = findRuleIndex(s);
+    if (i >= 0)
+        m_lstCSSRules.get()->deleteRule(i);
+}
+
+WebKitCSSKeyframeRule* WebKitCSSKeyframesRule::findRule(const String& s)
+{
+    int i = findRuleIndex(s);
+    return (i >= 0) ? item(i) : 0;
+}
+
+int WebKitCSSKeyframesRule::findRuleIndex(const String& key) const
+{
+    String percentageString;
+    if (equalIgnoringCase(key, "from"))
+        percentageString = "0%";
+    else if (equalIgnoringCase(key, "to"))
+        percentageString = "100%";
+    else
+        percentageString = key;
+
+    for (unsigned i = 0; i < length(); ++i) {
+        if (item(i)->keyText() == percentageString)
+            return i;
+    }
+
+    return -1;
+}
+
+String WebKitCSSKeyframesRule::cssText() const
+{
+    String result = "@-webkit-keyframes ";
+    result += m_name;
+    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