diff --git a/AppKit/CPButtonBar.j b/AppKit/CPButtonBar.j
index f655796b5..4dd9db247 100644
--- a/AppKit/CPButtonBar.j
+++ b/AppKit/CPButtonBar.j
@@ -26,7 +26,8 @@
 @class CPSplitView
 
 @global CPPopUpButtonStatePullsDown
-
+@global CPKeyValueChangeOldKey
+@global CPKeyValueChangeNewKey
 
 @implementation CPButtonBar : CPView
 {
@@ -129,10 +130,16 @@
 
 - (void)setButtons:(CPArray)buttons
 {
+    for (var i = [_buttons count] - 1; i >= 0; i--)
+        [_buttons[i] removeObserver:self forKeyPath:@"hidden"];
+
     _buttons = [CPArray arrayWithArray:buttons];
 
-    for (var i = 0, count = [_buttons count]; i < count; i++)
+    for (var i = [_buttons count] - 1; i >= 0; i--)
+    {
+        [_buttons[i] addObserver:self forKeyPath:@"hidden" options:nil context:nil];
         [_buttons[i] setBordered:YES];
+    }
 
     [self setNeedsLayout];
 }
@@ -280,6 +287,14 @@
     }
 }
 
+- (void)observeValueForKeyPath:(CPString)keyPath ofObject:(id)object change:(CPDictionary)change context:(id)context
+{
+    if ([change objectForKey:CPKeyValueChangeOldKey] == [change objectForKey:CPKeyValueChangeNewKey])
+        return;
+
+    [self setNeedsLayout];
+}
+
 - (void)setFrameSize:(CGSize)aSize
 {
     [super setFrameSize:aSize];
diff --git a/Objective-J/CFHTTPRequest.js b/Objective-J/CFHTTPRequest.js
index 1e82be082..6186dc80f 100644
--- a/Objective-J/CFHTTPRequest.js
+++ b/Objective-J/CFHTTPRequest.js
@@ -99,7 +99,6 @@ GLOBAL(CFHTTPRequest) = function()
     this._isOpen = false;
     this._requestHeaders = {};
     this._mimeType = null;
-    this._withCredentials = false;
 
     this._eventDispatcher = new EventDispatcher(this);
     this._nativeRequest = new NativeRequest();
@@ -225,9 +224,7 @@ CFHTTPRequest.prototype.open = function(/*String*/ aMethod, /*String*/ aURL, /*B
     this._method = aMethod;
     this._user = aUser;
     this._password = aPassword;
-    var result = this._nativeRequest.open(aMethod, aURL, isAsynchronous, aUser, aPassword);
-    this._nativeRequest.withCredentials = this._withCredentials;
-    return result;
+    return this._nativeRequest.open(aMethod, aURL, isAsynchronous, aUser, aPassword);
 };
 
 CFHTTPRequest.prototype.send = function(/*Object*/ aBody)
@@ -236,7 +233,6 @@ CFHTTPRequest.prototype.send = function(/*Object*/ aBody)
     {
         delete this._nativeRequest.onreadystatechange;
         this._nativeRequest.open(this._method, this._URL, this._async, this._user, this._password);
-        this._nativeRequest.withCredentials = this._withCredentials;
         this._nativeRequest.onreadystatechange = this._stateChangeHandler;
     }
 
@@ -280,12 +276,12 @@ CFHTTPRequest.prototype.removeEventListener = function(/*String*/ anEventName, /
 
 CFHTTPRequest.prototype.setWithCredentials = function(/*Boolean*/ willSendWithCredentials) 
 {
-    this.withCredentials = willSendWithCredentials;
+    this._nativeRequest.withCredentials = willSendWithCredentials;
 };
 
 CFHTTPRequest.prototype.getWithCredentials = function() 
 {
-    return this.withCredentials;
+    return this._nativeRequest.withCredentials;
 };
 
 function determineAndDispatchHTTPRequestEvents(/*CFHTTPRequest*/ aRequest)