diff --git a/dom/src/base/nsJSHistory.cpp b/dom/src/base/nsJSHistory.cpp
index 5f0d3924c3a..5d24a9fe22e 100644
--- a/dom/src/base/nsJSHistory.cpp
+++ b/dom/src/base/nsJSHistory.cpp
@@ -218,7 +218,6 @@ PR_STATIC_CALLBACK(JSBool)
 HistoryBack(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHistory *nativeThis = (nsIDOMHistory*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -266,7 +265,6 @@ PR_STATIC_CALLBACK(JSBool)
 HistoryForward(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHistory *nativeThis = (nsIDOMHistory*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -314,7 +312,6 @@ PR_STATIC_CALLBACK(JSBool)
 HistoryGo(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHistory *nativeThis = (nsIDOMHistory*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRInt32 b0;
 
   *rval = JSVAL_NULL;
diff --git a/dom/src/base/nsJSLocation.cpp b/dom/src/base/nsJSLocation.cpp
index ab77c54ef27..d1a84330767 100644
--- a/dom/src/base/nsJSLocation.cpp
+++ b/dom/src/base/nsJSLocation.cpp
@@ -397,7 +397,6 @@ PR_STATIC_CALLBACK(JSBool)
 LocationReload(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMLocation *nativeThis = (nsIDOMLocation*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -445,7 +444,6 @@ PR_STATIC_CALLBACK(JSBool)
 LocationReplace(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMLocation *nativeThis = (nsIDOMLocation*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsAutoString b0;
 
   *rval = JSVAL_NULL;
@@ -496,7 +494,6 @@ PR_STATIC_CALLBACK(JSBool)
 LocationToString(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMLocation *nativeThis = (nsIDOMLocation*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsAutoString nativeRet;
 
   *rval = JSVAL_NULL;
diff --git a/dom/src/base/nsJSMimeTypeArray.cpp b/dom/src/base/nsJSMimeTypeArray.cpp
index eba6818767c..ab66f7f687f 100644
--- a/dom/src/base/nsJSMimeTypeArray.cpp
+++ b/dom/src/base/nsJSMimeTypeArray.cpp
@@ -208,7 +208,6 @@ PR_STATIC_CALLBACK(JSBool)
 MimeTypeArrayItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMMimeTypeArray *nativeThis = (nsIDOMMimeTypeArray*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMMimeType* nativeRet;
   PRUint32 b0;
 
@@ -263,7 +262,6 @@ PR_STATIC_CALLBACK(JSBool)
 MimeTypeArrayNamedItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMMimeTypeArray *nativeThis = (nsIDOMMimeTypeArray*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMMimeType* nativeRet;
   nsAutoString b0;
 
diff --git a/dom/src/base/nsJSPlugin.cpp b/dom/src/base/nsJSPlugin.cpp
index 3efce559d0a..118cf68c8a3 100644
--- a/dom/src/base/nsJSPlugin.cpp
+++ b/dom/src/base/nsJSPlugin.cpp
@@ -259,7 +259,6 @@ PR_STATIC_CALLBACK(JSBool)
 PluginItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMPlugin *nativeThis = (nsIDOMPlugin*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMMimeType* nativeRet;
   PRUint32 b0;
 
@@ -314,7 +313,6 @@ PR_STATIC_CALLBACK(JSBool)
 PluginNamedItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMPlugin *nativeThis = (nsIDOMPlugin*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMMimeType* nativeRet;
   nsAutoString b0;
 
diff --git a/dom/src/base/nsJSPluginArray.cpp b/dom/src/base/nsJSPluginArray.cpp
index 7a5356691e0..1761f08cd3b 100644
--- a/dom/src/base/nsJSPluginArray.cpp
+++ b/dom/src/base/nsJSPluginArray.cpp
@@ -208,7 +208,6 @@ PR_STATIC_CALLBACK(JSBool)
 PluginArrayItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMPluginArray *nativeThis = (nsIDOMPluginArray*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMPlugin* nativeRet;
   PRUint32 b0;
 
@@ -263,7 +262,6 @@ PR_STATIC_CALLBACK(JSBool)
 PluginArrayNamedItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMPluginArray *nativeThis = (nsIDOMPluginArray*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMPlugin* nativeRet;
   nsAutoString b0;
 
@@ -315,7 +313,6 @@ PR_STATIC_CALLBACK(JSBool)
 PluginArrayRefresh(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMPluginArray *nativeThis = (nsIDOMPluginArray*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRBool b0;
 
   *rval = JSVAL_NULL;
diff --git a/dom/src/base/nsJSWindow.cpp b/dom/src/base/nsJSWindow.cpp
index c9ceee3f883..4877d0aa719 100644
--- a/dom/src/base/nsJSWindow.cpp
+++ b/dom/src/base/nsJSWindow.cpp
@@ -935,7 +935,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowDump(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsAutoString b0;
 
   *rval = JSVAL_NULL;
@@ -986,7 +985,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowAlert(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -1034,7 +1032,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowConfirm(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRBool nativeRet;
 
   *rval = JSVAL_NULL;
@@ -1083,7 +1080,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowPrompt(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsAutoString nativeRet;
 
   *rval = JSVAL_NULL;
@@ -1132,7 +1128,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowFocus(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -1180,7 +1175,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowBlur(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -1228,7 +1222,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowClose(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -1276,7 +1269,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowBack(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -1324,7 +1316,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowForward(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -1372,7 +1363,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowHome(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -1420,7 +1410,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowStop(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -1468,7 +1457,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowPrint(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -1516,7 +1504,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowMoveTo(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRInt32 b0;
   PRInt32 b1;
 
@@ -1576,7 +1563,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowMoveBy(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRInt32 b0;
   PRInt32 b1;
 
@@ -1636,7 +1622,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowResizeTo(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRInt32 b0;
   PRInt32 b1;
 
@@ -1696,7 +1681,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowResizeBy(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRInt32 b0;
   PRInt32 b1;
 
@@ -1756,7 +1740,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowScrollTo(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRInt32 b0;
   PRInt32 b1;
 
@@ -1816,7 +1799,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowScrollBy(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRInt32 b0;
   PRInt32 b1;
 
@@ -1876,7 +1858,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowClearTimeout(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRInt32 b0;
 
   *rval = JSVAL_NULL;
@@ -1930,7 +1911,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowClearInterval(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRInt32 b0;
 
   *rval = JSVAL_NULL;
@@ -1984,7 +1964,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowSetTimeout(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRInt32 nativeRet;
 
   *rval = JSVAL_NULL;
@@ -2033,7 +2012,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowSetInterval(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRInt32 nativeRet;
 
   *rval = JSVAL_NULL;
@@ -2082,7 +2060,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowCreatePopup(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMWindow* nativeRet;
   nsIDOMElementPtr b0;
   nsIDOMElementPtr b1;
@@ -2170,7 +2147,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowOpen(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMWindow* nativeRet;
 
   *rval = JSVAL_NULL;
@@ -2219,7 +2195,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowOpenDialog(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindow *nativeThis = (nsIDOMWindow*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMWindow* nativeRet;
 
   *rval = JSVAL_NULL;
@@ -2274,7 +2249,6 @@ EventCapturerCaptureEvent(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
   nsAutoString b0;
 
   *rval = JSVAL_NULL;
@@ -2331,7 +2305,6 @@ EventCapturerReleaseEvent(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
   nsAutoString b0;
 
   *rval = JSVAL_NULL;
@@ -2388,7 +2361,6 @@ EventTargetAddEventListener(JSContext *cx, JSObject *obj, uintN argc, jsval *arg
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
   nsAutoString b0;
   nsIDOMEventListener* b1;
   PRBool b2;
@@ -2463,7 +2435,6 @@ EventTargetRemoveEventListener(JSContext *cx, JSObject *obj, uintN argc, jsval *
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
   nsAutoString b0;
   nsIDOMEventListener* b1;
   PRBool b2;
diff --git a/dom/src/base/nsJSWindowCollection.cpp b/dom/src/base/nsJSWindowCollection.cpp
index a8cf81fb7d2..270a8764b01 100644
--- a/dom/src/base/nsJSWindowCollection.cpp
+++ b/dom/src/base/nsJSWindowCollection.cpp
@@ -208,7 +208,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowCollectionItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindowCollection *nativeThis = (nsIDOMWindowCollection*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMWindow* nativeRet;
   PRUint32 b0;
 
@@ -263,7 +262,6 @@ PR_STATIC_CALLBACK(JSBool)
 WindowCollectionNamedItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMWindowCollection *nativeThis = (nsIDOMWindowCollection*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMWindow* nativeRet;
   nsAutoString b0;
 
diff --git a/dom/src/coreDOM/nsJSCharacterData.cpp b/dom/src/coreDOM/nsJSCharacterData.cpp
index ee7d84ff579..9fcff347abd 100644
--- a/dom/src/coreDOM/nsJSCharacterData.cpp
+++ b/dom/src/coreDOM/nsJSCharacterData.cpp
@@ -197,7 +197,6 @@ PR_STATIC_CALLBACK(JSBool)
 CharacterDataSubstringData(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMCharacterData *nativeThis = (nsIDOMCharacterData*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsAutoString nativeRet;
   PRUint32 b0;
   PRUint32 b1;
@@ -258,7 +257,6 @@ PR_STATIC_CALLBACK(JSBool)
 CharacterDataAppendData(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMCharacterData *nativeThis = (nsIDOMCharacterData*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsAutoString b0;
 
   *rval = JSVAL_NULL;
@@ -309,7 +307,6 @@ PR_STATIC_CALLBACK(JSBool)
 CharacterDataInsertData(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMCharacterData *nativeThis = (nsIDOMCharacterData*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRUint32 b0;
   nsAutoString b1;
 
@@ -366,7 +363,6 @@ PR_STATIC_CALLBACK(JSBool)
 CharacterDataDeleteData(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMCharacterData *nativeThis = (nsIDOMCharacterData*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRUint32 b0;
   PRUint32 b1;
 
@@ -426,7 +422,6 @@ PR_STATIC_CALLBACK(JSBool)
 CharacterDataReplaceData(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMCharacterData *nativeThis = (nsIDOMCharacterData*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRUint32 b0;
   PRUint32 b1;
   nsAutoString b2;
diff --git a/dom/src/coreDOM/nsJSDOMImplementation.cpp b/dom/src/coreDOM/nsJSDOMImplementation.cpp
index 4171ec933c6..1a7e8ca05d9 100644
--- a/dom/src/coreDOM/nsJSDOMImplementation.cpp
+++ b/dom/src/coreDOM/nsJSDOMImplementation.cpp
@@ -146,7 +146,6 @@ PR_STATIC_CALLBACK(JSBool)
 DOMImplementationHasFeature(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMDOMImplementation *nativeThis = (nsIDOMDOMImplementation*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRBool nativeRet;
   nsAutoString b0;
   nsAutoString b1;
diff --git a/dom/src/coreDOM/nsJSDocument.cpp b/dom/src/coreDOM/nsJSDocument.cpp
index 386a941357e..ea57e22439e 100644
--- a/dom/src/coreDOM/nsJSDocument.cpp
+++ b/dom/src/coreDOM/nsJSDocument.cpp
@@ -276,7 +276,6 @@ PR_STATIC_CALLBACK(JSBool)
 DocumentCreateElement(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMDocument *nativeThis = (nsIDOMDocument*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMElement* nativeRet;
   nsAutoString b0;
 
@@ -328,7 +327,6 @@ PR_STATIC_CALLBACK(JSBool)
 DocumentCreateDocumentFragment(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMDocument *nativeThis = (nsIDOMDocument*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMDocumentFragment* nativeRet;
 
   *rval = JSVAL_NULL;
@@ -377,7 +375,6 @@ PR_STATIC_CALLBACK(JSBool)
 DocumentCreateTextNode(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMDocument *nativeThis = (nsIDOMDocument*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMText* nativeRet;
   nsAutoString b0;
 
@@ -429,7 +426,6 @@ PR_STATIC_CALLBACK(JSBool)
 DocumentCreateComment(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMDocument *nativeThis = (nsIDOMDocument*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMComment* nativeRet;
   nsAutoString b0;
 
@@ -481,7 +477,6 @@ PR_STATIC_CALLBACK(JSBool)
 DocumentCreateCDATASection(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMDocument *nativeThis = (nsIDOMDocument*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMCDATASection* nativeRet;
   nsAutoString b0;
 
@@ -533,7 +528,6 @@ PR_STATIC_CALLBACK(JSBool)
 DocumentCreateProcessingInstruction(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMDocument *nativeThis = (nsIDOMDocument*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMProcessingInstruction* nativeRet;
   nsAutoString b0;
   nsAutoString b1;
@@ -588,7 +582,6 @@ PR_STATIC_CALLBACK(JSBool)
 DocumentCreateAttribute(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMDocument *nativeThis = (nsIDOMDocument*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMAttr* nativeRet;
   nsAutoString b0;
 
@@ -640,7 +633,6 @@ PR_STATIC_CALLBACK(JSBool)
 DocumentCreateEntityReference(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMDocument *nativeThis = (nsIDOMDocument*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMEntityReference* nativeRet;
   nsAutoString b0;
 
@@ -692,7 +684,6 @@ PR_STATIC_CALLBACK(JSBool)
 DocumentGetElementsByTagName(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMDocument *nativeThis = (nsIDOMDocument*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNodeList* nativeRet;
   nsAutoString b0;
 
@@ -750,7 +741,6 @@ NSDocumentCreateElementWithNameSpace(JSContext *cx, JSObject *obj, uintN argc, j
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
   nsIDOMElement* nativeRet;
   nsAutoString b0;
   nsAutoString b1;
@@ -811,7 +801,6 @@ NSDocumentCreateRange(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsv
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
   nsIDOMRange* nativeRet;
 
   *rval = JSVAL_NULL;
@@ -866,7 +855,6 @@ EventCapturerCaptureEvent(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
   nsAutoString b0;
 
   *rval = JSVAL_NULL;
@@ -923,7 +911,6 @@ EventCapturerReleaseEvent(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
   nsAutoString b0;
 
   *rval = JSVAL_NULL;
diff --git a/dom/src/coreDOM/nsJSElement.cpp b/dom/src/coreDOM/nsJSElement.cpp
index 361886dbfd6..42f13985f9d 100644
--- a/dom/src/coreDOM/nsJSElement.cpp
+++ b/dom/src/coreDOM/nsJSElement.cpp
@@ -173,7 +173,6 @@ PR_STATIC_CALLBACK(JSBool)
 ElementGetAttribute(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMElement *nativeThis = (nsIDOMElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsAutoString nativeRet;
   nsAutoString b0;
 
@@ -225,7 +224,6 @@ PR_STATIC_CALLBACK(JSBool)
 ElementSetAttribute(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMElement *nativeThis = (nsIDOMElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsAutoString b0;
   nsAutoString b1;
 
@@ -279,7 +277,6 @@ PR_STATIC_CALLBACK(JSBool)
 ElementRemoveAttribute(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMElement *nativeThis = (nsIDOMElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsAutoString b0;
 
   *rval = JSVAL_NULL;
@@ -330,7 +327,6 @@ PR_STATIC_CALLBACK(JSBool)
 ElementGetAttributeNode(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMElement *nativeThis = (nsIDOMElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMAttr* nativeRet;
   nsAutoString b0;
 
@@ -382,7 +378,6 @@ PR_STATIC_CALLBACK(JSBool)
 ElementSetAttributeNode(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMElement *nativeThis = (nsIDOMElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMAttr* nativeRet;
   nsIDOMAttrPtr b0;
 
@@ -440,7 +435,6 @@ PR_STATIC_CALLBACK(JSBool)
 ElementRemoveAttributeNode(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMElement *nativeThis = (nsIDOMElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMAttr* nativeRet;
   nsIDOMAttrPtr b0;
 
@@ -498,7 +492,6 @@ PR_STATIC_CALLBACK(JSBool)
 ElementGetElementsByTagName(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMElement *nativeThis = (nsIDOMElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNodeList* nativeRet;
   nsAutoString b0;
 
@@ -550,7 +543,6 @@ PR_STATIC_CALLBACK(JSBool)
 ElementNormalize(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMElement *nativeThis = (nsIDOMElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
diff --git a/dom/src/coreDOM/nsJSNamedNodeMap.cpp b/dom/src/coreDOM/nsJSNamedNodeMap.cpp
index 94d36fca839..131c1750bd1 100644
--- a/dom/src/coreDOM/nsJSNamedNodeMap.cpp
+++ b/dom/src/coreDOM/nsJSNamedNodeMap.cpp
@@ -178,7 +178,6 @@ PR_STATIC_CALLBACK(JSBool)
 NamedNodeMapGetNamedItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMNamedNodeMap *nativeThis = (nsIDOMNamedNodeMap*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNode* nativeRet;
   nsAutoString b0;
 
@@ -230,7 +229,6 @@ PR_STATIC_CALLBACK(JSBool)
 NamedNodeMapSetNamedItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMNamedNodeMap *nativeThis = (nsIDOMNamedNodeMap*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNode* nativeRet;
   nsIDOMNodePtr b0;
 
@@ -288,7 +286,6 @@ PR_STATIC_CALLBACK(JSBool)
 NamedNodeMapRemoveNamedItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMNamedNodeMap *nativeThis = (nsIDOMNamedNodeMap*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNode* nativeRet;
   nsAutoString b0;
 
@@ -340,7 +337,6 @@ PR_STATIC_CALLBACK(JSBool)
 NamedNodeMapItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMNamedNodeMap *nativeThis = (nsIDOMNamedNodeMap*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNode* nativeRet;
   PRUint32 b0;
 
diff --git a/dom/src/coreDOM/nsJSNode.cpp b/dom/src/coreDOM/nsJSNode.cpp
index d097259861f..43a911c08a6 100644
--- a/dom/src/coreDOM/nsJSNode.cpp
+++ b/dom/src/coreDOM/nsJSNode.cpp
@@ -373,7 +373,6 @@ PR_STATIC_CALLBACK(JSBool)
 NodeInsertBefore(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMNode *nativeThis = (nsIDOMNode*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNode* nativeRet;
   nsIDOMNodePtr b0;
   nsIDOMNodePtr b1;
@@ -440,7 +439,6 @@ PR_STATIC_CALLBACK(JSBool)
 NodeReplaceChild(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMNode *nativeThis = (nsIDOMNode*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNode* nativeRet;
   nsIDOMNodePtr b0;
   nsIDOMNodePtr b1;
@@ -507,7 +505,6 @@ PR_STATIC_CALLBACK(JSBool)
 NodeRemoveChild(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMNode *nativeThis = (nsIDOMNode*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNode* nativeRet;
   nsIDOMNodePtr b0;
 
@@ -565,7 +562,6 @@ PR_STATIC_CALLBACK(JSBool)
 NodeAppendChild(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMNode *nativeThis = (nsIDOMNode*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNode* nativeRet;
   nsIDOMNodePtr b0;
 
@@ -623,7 +619,6 @@ PR_STATIC_CALLBACK(JSBool)
 NodeHasChildNodes(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMNode *nativeThis = (nsIDOMNode*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRBool nativeRet;
 
   *rval = JSVAL_NULL;
@@ -672,7 +667,6 @@ PR_STATIC_CALLBACK(JSBool)
 NodeCloneNode(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMNode *nativeThis = (nsIDOMNode*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNode* nativeRet;
   PRBool b0;
 
@@ -732,7 +726,6 @@ EventTargetAddEventListener(JSContext *cx, JSObject *obj, uintN argc, jsval *arg
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
   nsAutoString b0;
   nsIDOMEventListener* b1;
   PRBool b2;
@@ -807,7 +800,6 @@ EventTargetRemoveEventListener(JSContext *cx, JSObject *obj, uintN argc, jsval *
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
   nsAutoString b0;
   nsIDOMEventListener* b1;
   PRBool b2;
diff --git a/dom/src/coreDOM/nsJSNodeList.cpp b/dom/src/coreDOM/nsJSNodeList.cpp
index 895f631fc9b..a4c5b6b8d83 100644
--- a/dom/src/coreDOM/nsJSNodeList.cpp
+++ b/dom/src/coreDOM/nsJSNodeList.cpp
@@ -178,7 +178,6 @@ PR_STATIC_CALLBACK(JSBool)
 NodeListItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMNodeList *nativeThis = (nsIDOMNodeList*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNode* nativeRet;
   PRUint32 b0;
 
diff --git a/dom/src/coreDOM/nsJSStyleSheetCollection.cpp b/dom/src/coreDOM/nsJSStyleSheetCollection.cpp
index 7946bab71b2..55ba5f76a17 100644
--- a/dom/src/coreDOM/nsJSStyleSheetCollection.cpp
+++ b/dom/src/coreDOM/nsJSStyleSheetCollection.cpp
@@ -178,7 +178,6 @@ PR_STATIC_CALLBACK(JSBool)
 StyleSheetCollectionItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMStyleSheetCollection *nativeThis = (nsIDOMStyleSheetCollection*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMStyleSheet* nativeRet;
   PRUint32 b0;
 
diff --git a/dom/src/coreDOM/nsJSText.cpp b/dom/src/coreDOM/nsJSText.cpp
index 41ced113820..14862500015 100644
--- a/dom/src/coreDOM/nsJSText.cpp
+++ b/dom/src/coreDOM/nsJSText.cpp
@@ -146,7 +146,6 @@ PR_STATIC_CALLBACK(JSBool)
 TextSplitText(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMText *nativeThis = (nsIDOMText*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMText* nativeRet;
   PRUint32 b0;
 
diff --git a/dom/src/css/nsJSCSSMediaRule.cpp b/dom/src/css/nsJSCSSMediaRule.cpp
index 64262d0dfae..b9276b9d62c 100644
--- a/dom/src/css/nsJSCSSMediaRule.cpp
+++ b/dom/src/css/nsJSCSSMediaRule.cpp
@@ -201,7 +201,6 @@ PR_STATIC_CALLBACK(JSBool)
 CSSMediaRuleInsertRule(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMCSSMediaRule *nativeThis = (nsIDOMCSSMediaRule*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRUint32 nativeRet;
   nsAutoString b0;
   PRUint32 b1;
@@ -259,7 +258,6 @@ PR_STATIC_CALLBACK(JSBool)
 CSSMediaRuleDeleteRule(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMCSSMediaRule *nativeThis = (nsIDOMCSSMediaRule*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRUint32 b0;
 
   *rval = JSVAL_NULL;
diff --git a/dom/src/css/nsJSCSSStyleDeclaration.cpp b/dom/src/css/nsJSCSSStyleDeclaration.cpp
index 558a244c1d8..e8966401a3b 100644
--- a/dom/src/css/nsJSCSSStyleDeclaration.cpp
+++ b/dom/src/css/nsJSCSSStyleDeclaration.cpp
@@ -204,7 +204,6 @@ PR_STATIC_CALLBACK(JSBool)
 CSSStyleDeclarationGetPropertyValue(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMCSSStyleDeclaration *nativeThis = (nsIDOMCSSStyleDeclaration*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsAutoString nativeRet;
   nsAutoString b0;
 
@@ -256,7 +255,6 @@ PR_STATIC_CALLBACK(JSBool)
 CSSStyleDeclarationGetPropertyPriority(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMCSSStyleDeclaration *nativeThis = (nsIDOMCSSStyleDeclaration*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsAutoString nativeRet;
   nsAutoString b0;
 
@@ -308,7 +306,6 @@ PR_STATIC_CALLBACK(JSBool)
 CSSStyleDeclarationSetProperty(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMCSSStyleDeclaration *nativeThis = (nsIDOMCSSStyleDeclaration*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsAutoString b0;
   nsAutoString b1;
   nsAutoString b2;
@@ -365,7 +362,6 @@ PR_STATIC_CALLBACK(JSBool)
 CSSStyleDeclarationItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMCSSStyleDeclaration *nativeThis = (nsIDOMCSSStyleDeclaration*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsAutoString nativeRet;
   PRUint32 b0;
 
diff --git a/dom/src/css/nsJSCSSStyleRuleCollection.cpp b/dom/src/css/nsJSCSSStyleRuleCollection.cpp
index c6d499294a7..f308755cdf8 100644
--- a/dom/src/css/nsJSCSSStyleRuleCollection.cpp
+++ b/dom/src/css/nsJSCSSStyleRuleCollection.cpp
@@ -178,7 +178,6 @@ PR_STATIC_CALLBACK(JSBool)
 CSSStyleRuleCollectionItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMCSSStyleRuleCollection *nativeThis = (nsIDOMCSSStyleRuleCollection*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMCSSStyleRule* nativeRet;
   PRUint32 b0;
 
diff --git a/dom/src/css/nsJSCSSStyleSheet.cpp b/dom/src/css/nsJSCSSStyleSheet.cpp
index dea7b539278..8f0597828c1 100644
--- a/dom/src/css/nsJSCSSStyleSheet.cpp
+++ b/dom/src/css/nsJSCSSStyleSheet.cpp
@@ -264,7 +264,6 @@ PR_STATIC_CALLBACK(JSBool)
 CSSStyleSheetInsertRule(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMCSSStyleSheet *nativeThis = (nsIDOMCSSStyleSheet*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRUint32 nativeRet;
   nsAutoString b0;
   PRUint32 b1;
@@ -322,7 +321,6 @@ PR_STATIC_CALLBACK(JSBool)
 CSSStyleSheetDeleteRule(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMCSSStyleSheet *nativeThis = (nsIDOMCSSStyleSheet*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRUint32 b0;
 
   *rval = JSVAL_NULL;
diff --git a/dom/src/events/nsJSEvent.cpp b/dom/src/events/nsJSEvent.cpp
index 31791843560..ecf32431284 100644
--- a/dom/src/events/nsJSEvent.cpp
+++ b/dom/src/events/nsJSEvent.cpp
@@ -223,7 +223,6 @@ PR_STATIC_CALLBACK(JSBool)
 EventPreventBubble(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMEvent *nativeThis = (nsIDOMEvent*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -271,7 +270,6 @@ PR_STATIC_CALLBACK(JSBool)
 EventPreventCapture(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMEvent *nativeThis = (nsIDOMEvent*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -319,7 +317,6 @@ PR_STATIC_CALLBACK(JSBool)
 EventPreventDefault(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMEvent *nativeThis = (nsIDOMEvent*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
diff --git a/dom/src/events/nsJSTextRange.cpp b/dom/src/events/nsJSTextRange.cpp
index bcd9419774a..e69de29bb2d 100644
--- a/dom/src/events/nsJSTextRange.cpp
+++ b/dom/src/events/nsJSTextRange.cpp
@@ -1,515 +0,0 @@
-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
- *
- * The contents of this file are subject to the Netscape Public License
- * Version 1.0 (the "NPL"); you may not use this file except in
- * compliance with the NPL.  You may obtain a copy of the NPL at
- * http://www.mozilla.org/NPL/
- *
- * Software distributed under the NPL is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
- * for the specific language governing rights and limitations under the
- * NPL.
- *
- * The Initial Developer of this code under the NPL is Netscape
- * Communications Corporation.  Portions created by Netscape are
- * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
- * Reserved.
- */
-/* AUTO-GENERATED. DO NOT EDIT!!! */
-
-#include "jsapi.h"
-#include "nsJSUtils.h"
-#include "nscore.h"
-#include "nsIScriptContext.h"
-#include "nsIScriptSecurityManager.h"
-#include "nsIJSScriptObject.h"
-#include "nsIScriptObjectOwner.h"
-#include "nsIScriptGlobalObject.h"
-#include "nsIPtr.h"
-#include "nsString.h"
-#include "nsIDOMTextRange.h"
-#include "nsIDOMTextRangeList.h"
-
-
-static NS_DEFINE_IID(kIScriptObjectOwnerIID, NS_ISCRIPTOBJECTOWNER_IID);
-static NS_DEFINE_IID(kIJSScriptObjectIID, NS_IJSSCRIPTOBJECT_IID);
-static NS_DEFINE_IID(kIScriptGlobalObjectIID, NS_ISCRIPTGLOBALOBJECT_IID);
-static NS_DEFINE_IID(kITextRangeIID, NS_IDOMTEXTRANGE_IID);
-static NS_DEFINE_IID(kITextRangeListIID, NS_IDOMTEXTRANGELIST_IID);
-
-NS_DEF_PTR(nsIDOMTextRange);
-NS_DEF_PTR(nsIDOMTextRangeList);
-
-//
-// TextRange property ids
-//
-enum TextRange_slots {
-  TEXTRANGE_RANGESTART = -1,
-  TEXTRANGE_RANGEEND = -2,
-  TEXTRANGE_RANGETYPE = -3,
-  TEXTRANGELIST_LENGTH = -4
-};
-
-/***********************************************************************/
-//
-// TextRange Properties Getter
-//
-PR_STATIC_CALLBACK(JSBool)
-GetTextRangeProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
-{
-  nsIDOMTextRange *a = (nsIDOMTextRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-
-  // If there's no private data, this must be the prototype, so ignore
-  if (nsnull == a) {
-    return JS_TRUE;
-  }
-
-  if (JSVAL_IS_INT(id)) {
-    nsIScriptContext *scriptCX = (nsIScriptContext *)JS_GetContextPrivate(cx);
-    nsIScriptSecurityManager *secMan;
-    PRBool ok = PR_FALSE;
-    if (NS_OK != scriptCX->GetSecurityManager(&secMan)) {
-      return JS_FALSE;
-    }
-    switch(JSVAL_TO_INT(id)) {
-      case TEXTRANGE_RANGESTART:
-      {
-        secMan->CheckScriptAccess(scriptCX, obj, "textrange.rangestart", &ok);
-        if (!ok) {
-          //Need to throw error here
-          return JS_FALSE;
-        }
-        PRUint16 prop;
-        if (NS_OK == a->GetRangeStart(&prop)) {
-          *vp = INT_TO_JSVAL(prop);
-        }
-        else {
-          return JS_FALSE;
-        }
-        break;
-      }
-      case TEXTRANGE_RANGEEND:
-      {
-        secMan->CheckScriptAccess(scriptCX, obj, "textrange.rangeend", &ok);
-        if (!ok) {
-          //Need to throw error here
-          return JS_FALSE;
-        }
-        PRUint16 prop;
-        if (NS_OK == a->GetRangeEnd(&prop)) {
-          *vp = INT_TO_JSVAL(prop);
-        }
-        else {
-          return JS_FALSE;
-        }
-        break;
-      }
-      case TEXTRANGE_RANGETYPE:
-      {
-        secMan->CheckScriptAccess(scriptCX, obj, "textrange.rangetype", &ok);
-        if (!ok) {
-          //Need to throw error here
-          return JS_FALSE;
-        }
-        PRUint16 prop;
-        if (NS_OK == a->GetRangeType(&prop)) {
-          *vp = INT_TO_JSVAL(prop);
-        }
-        else {
-          return JS_FALSE;
-        }
-        break;
-      }
-      case TEXTRANGELIST_LENGTH:
-      {
-        secMan->CheckScriptAccess(scriptCX, obj, "textrangelist.length", &ok);
-        if (!ok) {
-          //Need to throw error here
-          return JS_FALSE;
-        }
-        PRUint16 prop;
-        nsIDOMTextRangeList* b;
-        if (NS_OK == a->QueryInterface(kITextRangeListIID, (void **)&b)) {
-          if(NS_OK == b->GetLength(&prop)) {
-          *vp = INT_TO_JSVAL(prop);
-            NS_RELEASE(b);
-          }
-          else {
-            NS_RELEASE(b);
-            return JS_FALSE;
-          }
-        }
-        else {
-          JS_ReportError(cx, "Object must be of type TextRangeList");
-          return JS_FALSE;
-        }
-        break;
-      }
-      default:
-        return nsJSUtils::nsCallJSScriptObjectGetProperty(a, cx, id, vp);
-    }
-    NS_RELEASE(secMan);
-  }
-  else {
-    return nsJSUtils::nsCallJSScriptObjectGetProperty(a, cx, id, vp);
-  }
-
-  return PR_TRUE;
-}
-
-/***********************************************************************/
-//
-// TextRange Properties Setter
-//
-PR_STATIC_CALLBACK(JSBool)
-SetTextRangeProperty(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
-{
-  nsIDOMTextRange *a = (nsIDOMTextRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-
-  // If there's no private data, this must be the prototype, so ignore
-  if (nsnull == a) {
-    return JS_TRUE;
-  }
-
-  if (JSVAL_IS_INT(id)) {
-    nsIScriptContext *scriptCX = (nsIScriptContext *)JS_GetContextPrivate(cx);
-    nsIScriptSecurityManager *secMan;
-    PRBool ok = PR_FALSE;
-    if (NS_OK != scriptCX->GetSecurityManager(&secMan)) {
-      return JS_FALSE;
-    }
-    switch(JSVAL_TO_INT(id)) {
-      case TEXTRANGE_RANGESTART:
-      {
-        secMan->CheckScriptAccess(scriptCX, obj, "textrange.rangestart", &ok);
-        if (!ok) {
-          //Need to throw error here
-          return JS_FALSE;
-        }
-        PRUint16 prop;
-        int32 temp;
-        if (JSVAL_IS_NUMBER(*vp) && JS_ValueToInt32(cx, *vp, &temp)) {
-          prop = (PRUint16)temp;
-        }
-        else {
-          JS_ReportError(cx, "Parameter must be a number");
-          return JS_FALSE;
-        }
-      
-        a->SetRangeStart(prop);
-        
-        break;
-      }
-      case TEXTRANGE_RANGEEND:
-      {
-        secMan->CheckScriptAccess(scriptCX, obj, "textrange.rangeend", &ok);
-        if (!ok) {
-          //Need to throw error here
-          return JS_FALSE;
-        }
-        PRUint16 prop;
-        int32 temp;
-        if (JSVAL_IS_NUMBER(*vp) && JS_ValueToInt32(cx, *vp, &temp)) {
-          prop = (PRUint16)temp;
-        }
-        else {
-          JS_ReportError(cx, "Parameter must be a number");
-          return JS_FALSE;
-        }
-      
-        a->SetRangeEnd(prop);
-        
-        break;
-      }
-      case TEXTRANGE_RANGETYPE:
-      {
-        secMan->CheckScriptAccess(scriptCX, obj, "textrange.rangetype", &ok);
-        if (!ok) {
-          //Need to throw error here
-          return JS_FALSE;
-        }
-        PRUint16 prop;
-        int32 temp;
-        if (JSVAL_IS_NUMBER(*vp) && JS_ValueToInt32(cx, *vp, &temp)) {
-          prop = (PRUint16)temp;
-        }
-        else {
-          JS_ReportError(cx, "Parameter must be a number");
-          return JS_FALSE;
-        }
-      
-        a->SetRangeType(prop);
-        
-        break;
-      }
-      default:
-        return nsJSUtils::nsCallJSScriptObjectSetProperty(a, cx, id, vp);
-    }
-    NS_RELEASE(secMan);
-  }
-  else {
-    return nsJSUtils::nsCallJSScriptObjectSetProperty(a, cx, id, vp);
-  }
-
-  return PR_TRUE;
-}
-
-
-//
-// TextRange finalizer
-//
-PR_STATIC_CALLBACK(void)
-FinalizeTextRange(JSContext *cx, JSObject *obj)
-{
-  nsJSUtils::nsGenericFinalize(cx, obj);
-}
-
-
-//
-// TextRange enumerate
-//
-PR_STATIC_CALLBACK(JSBool)
-EnumerateTextRange(JSContext *cx, JSObject *obj)
-{
-  return nsJSUtils::nsGenericEnumerate(cx, obj);
-}
-
-
-//
-// TextRange resolve
-//
-PR_STATIC_CALLBACK(JSBool)
-ResolveTextRange(JSContext *cx, JSObject *obj, jsval id)
-{
-  return nsJSUtils::nsGenericResolve(cx, obj, id);
-}
-
-
-//
-// Native method Item
-//
-PR_STATIC_CALLBACK(JSBool)
-TextRangeListItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
-{
-  nsIDOMTextRange *privateThis = (nsIDOMTextRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  nsIDOMTextRangeList *nativeThis = nsnull;
-  if (NS_OK != privateThis->QueryInterface(kITextRangeListIID, (void **)&nativeThis)) {
-    JS_ReportError(cx, "Object must be of type TextRangeList");
-    return JS_FALSE;
-  }
-
-  JSBool rBool = JS_FALSE;
-  nsIDOMTextRange* nativeRet;
-  PRUint32 b0;
-
-  *rval = JSVAL_NULL;
-
-  nsIScriptContext *scriptCX = (nsIScriptContext *)JS_GetContextPrivate(cx);
-  nsIScriptSecurityManager *secMan;
-  if (NS_OK == scriptCX->GetSecurityManager(&secMan)) {
-    PRBool ok;
-    secMan->CheckScriptAccess(scriptCX, obj, "textrangelist.item", &ok);
-    if (!ok) {
-      //Need to throw error here
-      return JS_FALSE;
-    }
-    NS_RELEASE(secMan);
-  }
-  else {
-    return JS_FALSE;
-  }
-
-  // If there's no private data, this must be the prototype, so ignore
-  if (nsnull == nativeThis) {
-    return JS_TRUE;
-  }
-
-  if (argc >= 1) {
-
-    if (!JS_ValueToInt32(cx, argv[0], (int32 *)&b0)) {
-      JS_ReportError(cx, "Parameter must be a number");
-      return JS_FALSE;
-    }
-
-    if (NS_OK != nativeThis->Item(b0, &nativeRet)) {
-      return JS_FALSE;
-    }
-
-    nsJSUtils::nsConvertObjectToJSVal(nativeRet, cx, rval);
-  }
-  else {
-    JS_ReportError(cx, "Function Item requires 1 parameters");
-    return JS_FALSE;
-  }
-
-  return JS_TRUE;
-}
-
-
-/***********************************************************************/
-//
-// class for TextRange
-//
-JSClass TextRangeClass = {
-  "TextRange", 
-  JSCLASS_HAS_PRIVATE | JSCLASS_PRIVATE_IS_NSISUPPORTS,
-  JS_PropertyStub,
-  JS_PropertyStub,
-  GetTextRangeProperty,
-  SetTextRangeProperty,
-  EnumerateTextRange,
-  ResolveTextRange,
-  JS_ConvertStub,
-  FinalizeTextRange
-};
-
-
-//
-// TextRange class properties
-//
-static JSPropertySpec TextRangeProperties[] =
-{
-  {"rangeStart",    TEXTRANGE_RANGESTART,    JSPROP_ENUMERATE},
-  {"rangeEnd",    TEXTRANGE_RANGEEND,    JSPROP_ENUMERATE},
-  {"rangeType",    TEXTRANGE_RANGETYPE,    JSPROP_ENUMERATE},
-  {"length",    TEXTRANGELIST_LENGTH,    JSPROP_ENUMERATE | JSPROP_READONLY},
-  {0}
-};
-
-
-//
-// TextRange class methods
-//
-static JSFunctionSpec TextRangeMethods[] = 
-{
-  {"Item",          TextRangeListItem,     1},
-  {0}
-};
-
-
-//
-// TextRange constructor
-//
-PR_STATIC_CALLBACK(JSBool)
-TextRange(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
-{
-  return JS_FALSE;
-}
-
-
-//
-// TextRange class initialization
-//
-extern "C" NS_DOM nsresult NS_InitTextRangeClass(nsIScriptContext *aContext, void **aPrototype)
-{
-  JSContext *jscontext = (JSContext *)aContext->GetNativeContext();
-  JSObject *proto = nsnull;
-  JSObject *constructor = nsnull;
-  JSObject *parent_proto = nsnull;
-  JSObject *global = JS_GetGlobalObject(jscontext);
-  jsval vp;
-
-  if ((PR_TRUE != JS_LookupProperty(jscontext, global, "TextRange", &vp)) ||
-      !JSVAL_IS_OBJECT(vp) ||
-      ((constructor = JSVAL_TO_OBJECT(vp)) == nsnull) ||
-      (PR_TRUE != JS_LookupProperty(jscontext, JSVAL_TO_OBJECT(vp), "prototype", &vp)) || 
-      !JSVAL_IS_OBJECT(vp)) {
-
-    proto = JS_InitClass(jscontext,     // context
-                         global,        // global object
-                         parent_proto,  // parent proto 
-                         &TextRangeClass,      // JSClass
-                         TextRange,            // JSNative ctor
-                         0,             // ctor args
-                         TextRangeProperties,  // proto props
-                         TextRangeMethods,     // proto funcs
-                         nsnull,        // ctor props (static)
-                         nsnull);       // ctor funcs (static)
-    if (nsnull == proto) {
-      return NS_ERROR_FAILURE;
-    }
-
-    if ((PR_TRUE == JS_LookupProperty(jscontext, global, "TextRange", &vp)) &&
-        JSVAL_IS_OBJECT(vp) &&
-        ((constructor = JSVAL_TO_OBJECT(vp)) != nsnull)) {
-      vp = INT_TO_JSVAL(nsIDOMTextRange::TEXTRANGE_CARETPOSITION);
-      JS_SetProperty(jscontext, constructor, "TEXTRANGE_CARETPOSITION", &vp);
-
-      vp = INT_TO_JSVAL(nsIDOMTextRange::TEXTRANGE_RAWINPUT);
-      JS_SetProperty(jscontext, constructor, "TEXTRANGE_RAWINPUT", &vp);
-
-      vp = INT_TO_JSVAL(nsIDOMTextRange::TEXTRANGE_SELECTEDRAWTEXT);
-      JS_SetProperty(jscontext, constructor, "TEXTRANGE_SELECTEDRAWTEXT", &vp);
-
-      vp = INT_TO_JSVAL(nsIDOMTextRange::TEXTRANGE_CONVERTEDTEXT);
-      JS_SetProperty(jscontext, constructor, "TEXTRANGE_CONVERTEDTEXT", &vp);
-
-      vp = INT_TO_JSVAL(nsIDOMTextRange::TEXTRANGE_SELECTEDCONVERTEDTEXT);
-      JS_SetProperty(jscontext, constructor, "TEXTRANGE_SELECTEDCONVERTEDTEXT", &vp);
-
-    }
-
-  }
-  else if ((nsnull != constructor) && JSVAL_IS_OBJECT(vp)) {
-    proto = JSVAL_TO_OBJECT(vp);
-  }
-  else {
-    return NS_ERROR_FAILURE;
-  }
-
-  if (aPrototype) {
-    *aPrototype = proto;
-  }
-  return NS_OK;
-}
-
-
-//
-// Method for creating a new TextRange JavaScript object
-//
-extern "C" NS_DOM nsresult NS_NewScriptTextRange(nsIScriptContext *aContext, nsISupports *aSupports, nsISupports *aParent, void **aReturn)
-{
-  NS_PRECONDITION(nsnull != aContext && nsnull != aSupports && nsnull != aReturn, "null argument to NS_NewScriptTextRange");
-  JSObject *proto;
-  JSObject *parent;
-  nsIScriptObjectOwner *owner;
-  JSContext *jscontext = (JSContext *)aContext->GetNativeContext();
-  nsresult result = NS_OK;
-  nsIDOMTextRange *aTextRange;
-
-  if (nsnull == aParent) {
-    parent = nsnull;
-  }
-  else if (NS_OK == aParent->QueryInterface(kIScriptObjectOwnerIID, (void**)&owner)) {
-    if (NS_OK != owner->GetScriptObject(aContext, (void **)&parent)) {
-      NS_RELEASE(owner);
-      return NS_ERROR_FAILURE;
-    }
-    NS_RELEASE(owner);
-  }
-  else {
-    return NS_ERROR_FAILURE;
-  }
-
-  if (NS_OK != NS_InitTextRangeClass(aContext, (void **)&proto)) {
-    return NS_ERROR_FAILURE;
-  }
-
-  result = aSupports->QueryInterface(kITextRangeIID, (void **)&aTextRange);
-  if (NS_OK != result) {
-    return result;
-  }
-
-  // create a js object for this class
-  *aReturn = JS_NewObject(jscontext, &TextRangeClass, proto, parent);
-  if (nsnull != *aReturn) {
-    // connect the native object to the js object
-    JS_SetPrivate(jscontext, (JSObject *)*aReturn, aTextRange);
-  }
-  else {
-    NS_RELEASE(aTextRange);
-    return NS_ERROR_FAILURE; 
-  }
-
-  return NS_OK;
-}
diff --git a/dom/src/html/nsJSHTMLAnchorElement.cpp b/dom/src/html/nsJSHTMLAnchorElement.cpp
index 7389b567ae6..29470353ae2 100644
--- a/dom/src/html/nsJSHTMLAnchorElement.cpp
+++ b/dom/src/html/nsJSHTMLAnchorElement.cpp
@@ -528,7 +528,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLAnchorElementBlur(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLAnchorElement *nativeThis = (nsIDOMHTMLAnchorElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -576,7 +575,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLAnchorElementFocus(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLAnchorElement *nativeThis = (nsIDOMHTMLAnchorElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
diff --git a/dom/src/html/nsJSHTMLButtonElement.cpp b/dom/src/html/nsJSHTMLButtonElement.cpp
index 3dfa3b57cd2..ddd2d511957 100644
--- a/dom/src/html/nsJSHTMLButtonElement.cpp
+++ b/dom/src/html/nsJSHTMLButtonElement.cpp
@@ -360,7 +360,6 @@ NSHTMLButtonElementBlur(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, j
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -414,7 +413,6 @@ NSHTMLButtonElementFocus(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
diff --git a/dom/src/html/nsJSHTMLCollection.cpp b/dom/src/html/nsJSHTMLCollection.cpp
index cf33a8a2300..b38a10237f1 100644
--- a/dom/src/html/nsJSHTMLCollection.cpp
+++ b/dom/src/html/nsJSHTMLCollection.cpp
@@ -208,7 +208,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLCollectionItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLCollection *nativeThis = (nsIDOMHTMLCollection*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNode* nativeRet;
   PRUint32 b0;
 
@@ -263,7 +262,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLCollectionNamedItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLCollection *nativeThis = (nsIDOMHTMLCollection*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNode* nativeRet;
   nsAutoString b0;
 
diff --git a/dom/src/html/nsJSHTMLDocument.cpp b/dom/src/html/nsJSHTMLDocument.cpp
index 685bc755898..b341c3071e4 100644
--- a/dom/src/html/nsJSHTMLDocument.cpp
+++ b/dom/src/html/nsJSHTMLDocument.cpp
@@ -794,7 +794,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLDocumentClose(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLDocument *nativeThis = (nsIDOMHTMLDocument*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -842,7 +841,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLDocumentGetElementById(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLDocument *nativeThis = (nsIDOMHTMLDocument*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMElement* nativeRet;
   nsAutoString b0;
 
@@ -894,7 +892,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLDocumentGetElementsByName(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLDocument *nativeThis = (nsIDOMHTMLDocument*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNodeList* nativeRet;
   nsAutoString b0;
 
@@ -952,7 +949,6 @@ NSHTMLDocumentGetSelection(JSContext *cx, JSObject *obj, uintN argc, jsval *argv
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
   nsAutoString nativeRet;
 
   *rval = JSVAL_NULL;
@@ -1007,7 +1003,6 @@ NSHTMLDocumentNamedItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, j
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
   nsIDOMElement* nativeRet;
   nsAutoString b0;
 
@@ -1065,7 +1060,6 @@ NSHTMLDocumentOpen(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -1119,7 +1113,6 @@ NSHTMLDocumentWrite(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -1173,7 +1166,6 @@ NSHTMLDocumentWriteln(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsv
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
diff --git a/dom/src/html/nsJSHTMLFormElement.cpp b/dom/src/html/nsJSHTMLFormElement.cpp
index a8c7e83d8cb..573dfb0c479 100644
--- a/dom/src/html/nsJSHTMLFormElement.cpp
+++ b/dom/src/html/nsJSHTMLFormElement.cpp
@@ -444,7 +444,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLFormElementSubmit(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLFormElement *nativeThis = (nsIDOMHTMLFormElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -492,7 +491,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLFormElementReset(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLFormElement *nativeThis = (nsIDOMHTMLFormElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -546,7 +544,6 @@ NSHTMLFormElementNamedItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
   nsIDOMElement* nativeRet;
   nsAutoString b0;
 
diff --git a/dom/src/html/nsJSHTMLInputElement.cpp b/dom/src/html/nsJSHTMLInputElement.cpp
index 91abd105e2f..9fcdde466db 100644
--- a/dom/src/html/nsJSHTMLInputElement.cpp
+++ b/dom/src/html/nsJSHTMLInputElement.cpp
@@ -705,7 +705,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLInputElementBlur(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLInputElement *nativeThis = (nsIDOMHTMLInputElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -753,7 +752,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLInputElementFocus(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLInputElement *nativeThis = (nsIDOMHTMLInputElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -801,7 +799,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLInputElementSelect(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLInputElement *nativeThis = (nsIDOMHTMLInputElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -849,7 +846,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLInputElementClick(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLInputElement *nativeThis = (nsIDOMHTMLInputElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
diff --git a/dom/src/html/nsJSHTMLSelectElement.cpp b/dom/src/html/nsJSHTMLSelectElement.cpp
index a7019a484f2..58e789f1385 100644
--- a/dom/src/html/nsJSHTMLSelectElement.cpp
+++ b/dom/src/html/nsJSHTMLSelectElement.cpp
@@ -493,7 +493,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLSelectElementAdd(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLSelectElement *nativeThis = (nsIDOMHTMLSelectElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMHTMLElementPtr b0;
   nsIDOMHTMLElementPtr b1;
 
@@ -559,7 +558,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLSelectElementRemove(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLSelectElement *nativeThis = (nsIDOMHTMLSelectElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRInt32 b0;
 
   *rval = JSVAL_NULL;
@@ -613,7 +611,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLSelectElementBlur(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLSelectElement *nativeThis = (nsIDOMHTMLSelectElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -661,7 +658,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLSelectElementFocus(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLSelectElement *nativeThis = (nsIDOMHTMLSelectElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -715,7 +711,6 @@ NSHTMLSelectElementItem(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, j
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
   nsIDOMNode* nativeRet;
   PRUint32 b0;
 
diff --git a/dom/src/html/nsJSHTMLTableElement.cpp b/dom/src/html/nsJSHTMLTableElement.cpp
index b482ac9395a..ac7f1be3c86 100644
--- a/dom/src/html/nsJSHTMLTableElement.cpp
+++ b/dom/src/html/nsJSHTMLTableElement.cpp
@@ -584,7 +584,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLTableElementCreateTHead(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLTableElement *nativeThis = (nsIDOMHTMLTableElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMHTMLElement* nativeRet;
 
   *rval = JSVAL_NULL;
@@ -633,7 +632,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLTableElementDeleteTHead(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLTableElement *nativeThis = (nsIDOMHTMLTableElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -681,7 +679,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLTableElementCreateTFoot(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLTableElement *nativeThis = (nsIDOMHTMLTableElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMHTMLElement* nativeRet;
 
   *rval = JSVAL_NULL;
@@ -730,7 +727,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLTableElementDeleteTFoot(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLTableElement *nativeThis = (nsIDOMHTMLTableElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -778,7 +774,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLTableElementCreateCaption(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLTableElement *nativeThis = (nsIDOMHTMLTableElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMHTMLElement* nativeRet;
 
   *rval = JSVAL_NULL;
@@ -827,7 +822,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLTableElementDeleteCaption(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLTableElement *nativeThis = (nsIDOMHTMLTableElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -875,7 +869,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLTableElementInsertRow(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLTableElement *nativeThis = (nsIDOMHTMLTableElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMHTMLElement* nativeRet;
   PRInt32 b0;
 
@@ -930,7 +923,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLTableElementDeleteRow(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLTableElement *nativeThis = (nsIDOMHTMLTableElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRInt32 b0;
 
   *rval = JSVAL_NULL;
diff --git a/dom/src/html/nsJSHTMLTableRowElement.cpp b/dom/src/html/nsJSHTMLTableRowElement.cpp
index 79c7874353b..f100ae384c7 100644
--- a/dom/src/html/nsJSHTMLTableRowElement.cpp
+++ b/dom/src/html/nsJSHTMLTableRowElement.cpp
@@ -422,7 +422,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLTableRowElementInsertCell(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLTableRowElement *nativeThis = (nsIDOMHTMLTableRowElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMHTMLElement* nativeRet;
   PRInt32 b0;
 
@@ -477,7 +476,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLTableRowElementDeleteCell(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLTableRowElement *nativeThis = (nsIDOMHTMLTableRowElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRInt32 b0;
 
   *rval = JSVAL_NULL;
diff --git a/dom/src/html/nsJSHTMLTableSectionElement.cpp b/dom/src/html/nsJSHTMLTableSectionElement.cpp
index 3fffdb0964e..b3cbb4f9e1e 100644
--- a/dom/src/html/nsJSHTMLTableSectionElement.cpp
+++ b/dom/src/html/nsJSHTMLTableSectionElement.cpp
@@ -297,7 +297,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLTableSectionElementInsertRow(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLTableSectionElement *nativeThis = (nsIDOMHTMLTableSectionElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMHTMLElement* nativeRet;
   PRInt32 b0;
 
@@ -352,7 +351,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLTableSectionElementDeleteRow(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLTableSectionElement *nativeThis = (nsIDOMHTMLTableSectionElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRInt32 b0;
 
   *rval = JSVAL_NULL;
diff --git a/dom/src/html/nsJSHTMLTextAreaElement.cpp b/dom/src/html/nsJSHTMLTextAreaElement.cpp
index d8dfb176e62..21b34a89a55 100644
--- a/dom/src/html/nsJSHTMLTextAreaElement.cpp
+++ b/dom/src/html/nsJSHTMLTextAreaElement.cpp
@@ -491,7 +491,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLTextAreaElementBlur(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLTextAreaElement *nativeThis = (nsIDOMHTMLTextAreaElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -539,7 +538,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLTextAreaElementFocus(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLTextAreaElement *nativeThis = (nsIDOMHTMLTextAreaElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -587,7 +585,6 @@ PR_STATIC_CALLBACK(JSBool)
 HTMLTextAreaElementSelect(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMHTMLTextAreaElement *nativeThis = (nsIDOMHTMLTextAreaElement*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
diff --git a/dom/src/range/nsJSRange.cpp b/dom/src/range/nsJSRange.cpp
index b9d68a22161..e1b4c9ac411 100644
--- a/dom/src/range/nsJSRange.cpp
+++ b/dom/src/range/nsJSRange.cpp
@@ -264,7 +264,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeSetStart(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNodePtr b0;
   PRInt32 b1;
 
@@ -327,7 +326,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeSetStartBefore(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNodePtr b0;
 
   *rval = JSVAL_NULL;
@@ -384,7 +382,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeSetStartAfter(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNodePtr b0;
 
   *rval = JSVAL_NULL;
@@ -441,7 +438,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeSetEnd(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNodePtr b0;
   PRInt32 b1;
 
@@ -504,7 +500,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeSetEndBefore(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNodePtr b0;
 
   *rval = JSVAL_NULL;
@@ -561,7 +556,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeSetEndAfter(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNodePtr b0;
 
   *rval = JSVAL_NULL;
@@ -618,7 +612,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeCollapse(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRBool b0;
 
   *rval = JSVAL_NULL;
@@ -671,7 +664,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeSelectNode(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNodePtr b0;
 
   *rval = JSVAL_NULL;
@@ -728,7 +720,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeSelectNodeContents(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNodePtr b0;
 
   *rval = JSVAL_NULL;
@@ -785,7 +776,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeCompareEndPoints(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   PRInt32 nativeRet;
   PRUint32 b0;
   nsIDOMRangePtr b1;
@@ -849,7 +839,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeDeleteContents(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -897,7 +886,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeExtractContents(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMDocumentFragment* nativeRet;
 
   *rval = JSVAL_NULL;
@@ -946,7 +934,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeCloneContents(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMDocumentFragment* nativeRet;
 
   *rval = JSVAL_NULL;
@@ -995,7 +982,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeInsertNode(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNodePtr b0;
 
   *rval = JSVAL_NULL;
@@ -1052,7 +1038,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeSurroundContents(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNodePtr b0;
 
   *rval = JSVAL_NULL;
@@ -1109,7 +1094,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeClone(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMRange* nativeRet;
 
   *rval = JSVAL_NULL;
@@ -1158,7 +1142,6 @@ PR_STATIC_CALLBACK(JSBool)
 RangeToString(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMRange *nativeThis = (nsIDOMRange*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsAutoString nativeRet;
 
   *rval = JSVAL_NULL;
@@ -1213,7 +1196,6 @@ NSRangeCreateContextualFragment(JSContext *cx, JSObject *obj, uintN argc, jsval
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
   nsIDOMDocumentFragment* nativeRet;
   nsAutoString b0;
 
@@ -1271,7 +1253,6 @@ NSRangeIsValidFragment(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, js
     return JS_FALSE;
   }
 
-  JSBool rBool = JS_FALSE;
   PRBool nativeRet;
   nsAutoString b0;
 
diff --git a/dom/src/range/nsJSSelection.cpp b/dom/src/range/nsJSSelection.cpp
index ecdbfc283ea..f4dfdbba3de 100644
--- a/dom/src/range/nsJSSelection.cpp
+++ b/dom/src/range/nsJSSelection.cpp
@@ -263,7 +263,6 @@ PR_STATIC_CALLBACK(JSBool)
 SelectionGetRangeAt(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMSelection *nativeThis = (nsIDOMSelection*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMRange* nativeRet;
   PRInt32 b0;
 
@@ -318,7 +317,6 @@ PR_STATIC_CALLBACK(JSBool)
 SelectionClearSelection(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMSelection *nativeThis = (nsIDOMSelection*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -366,7 +364,6 @@ PR_STATIC_CALLBACK(JSBool)
 SelectionCollapse(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMSelection *nativeThis = (nsIDOMSelection*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNodePtr b0;
   PRInt32 b1;
 
@@ -429,7 +426,6 @@ PR_STATIC_CALLBACK(JSBool)
 SelectionExtend(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMSelection *nativeThis = (nsIDOMSelection*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMNodePtr b0;
   PRInt32 b1;
 
@@ -492,7 +488,6 @@ PR_STATIC_CALLBACK(JSBool)
 SelectionDeleteFromDocument(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMSelection *nativeThis = (nsIDOMSelection*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -540,7 +535,6 @@ PR_STATIC_CALLBACK(JSBool)
 SelectionAddRange(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMSelection *nativeThis = (nsIDOMSelection*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMRangePtr b0;
 
   *rval = JSVAL_NULL;
@@ -597,7 +591,6 @@ PR_STATIC_CALLBACK(JSBool)
 SelectionStartBatchChanges(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMSelection *nativeThis = (nsIDOMSelection*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -645,7 +638,6 @@ PR_STATIC_CALLBACK(JSBool)
 SelectionEndBatchChanges(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMSelection *nativeThis = (nsIDOMSelection*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;
 
@@ -693,7 +685,6 @@ PR_STATIC_CALLBACK(JSBool)
 SelectionAddSelectionListener(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMSelection *nativeThis = (nsIDOMSelection*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMSelectionListenerPtr b0;
 
   *rval = JSVAL_NULL;
@@ -750,7 +741,6 @@ PR_STATIC_CALLBACK(JSBool)
 SelectionRemoveSelectionListener(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMSelection *nativeThis = (nsIDOMSelection*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
   nsIDOMSelectionListenerPtr b0;
 
   *rval = JSVAL_NULL;
diff --git a/dom/src/range/nsJSSelectionListener.cpp b/dom/src/range/nsJSSelectionListener.cpp
index 61e19c5642e..ed56ec071b6 100644
--- a/dom/src/range/nsJSSelectionListener.cpp
+++ b/dom/src/range/nsJSSelectionListener.cpp
@@ -146,7 +146,6 @@ PR_STATIC_CALLBACK(JSBool)
 SelectionListenerNotifySelectionChanged(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 {
   nsIDOMSelectionListener *nativeThis = (nsIDOMSelectionListener*)nsJSUtils::nsGetNativeThis(cx, obj);
-  JSBool rBool = JS_FALSE;
 
   *rval = JSVAL_NULL;