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diff --git a/WebKit/mac/Misc/WebNSEventExtras.m b/WebKit/mac/Misc/WebNSEventExtras.m
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+++ b/WebKit/mac/Misc/WebNSEventExtras.m
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+/*
+ * Copyright (C) 2005 Apple Computer, 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. 
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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.
+ */
+
+#import <WebKit/WebNSEventExtras.h>
+
+@implementation NSEvent (WebExtras)
+
+-(BOOL)_web_isKeyEvent:(unichar)key
+{
+    int type = [self type];
+    if (type != NSKeyDown && type != NSKeyUp)
+        return NO;
+    
+    NSString *chars = [self charactersIgnoringModifiers];
+    if ([chars length] != 1)
+        return NO;
+    
+    unichar c = [chars characterAtIndex:0];
+    if (c != key)
+        return NO;
+    
+    return YES;
+}
+
+- (BOOL)_web_isDeleteKeyEvent
+{
+    const unichar deleteKey = NSDeleteCharacter;
+    const unichar deleteForwardKey = NSDeleteFunctionKey;
+    return [self _web_isKeyEvent:deleteKey] || [self _web_isKeyEvent:deleteForwardKey];
+}
+
+- (BOOL)_web_isEscapeKeyEvent
+{
+    const unichar escapeKey = 0x001b;
+    return [self _web_isKeyEvent:escapeKey];
+}
+
+- (BOOL)_web_isOptionTabKeyEvent
+{
+    return ([self modifierFlags] & NSAlternateKeyMask) && [self _web_isTabKeyEvent];
+}
+
+- (BOOL)_web_isReturnOrEnterKeyEvent
+{
+    const unichar enterKey = NSEnterCharacter;
+    const unichar returnKey = NSCarriageReturnCharacter;
+    return [self _web_isKeyEvent:enterKey] || [self _web_isKeyEvent:returnKey];
+}
+
+- (BOOL)_web_isTabKeyEvent
+{
+    const unichar tabKey = 0x0009;
+    const unichar shiftTabKey = 0x0019;
+    return [self _web_isKeyEvent:tabKey] || [self _web_isKeyEvent:shiftTabKey];
+}
+
+@end