Bug 361701 - First pane of preferences window is blank when animating is on. patch from Dave Townsend (Mossop) <mossop.bugzilla@blueprintit.co.uk>, r=me.

toolkit/content/widgets/preferences.xml

@@ -551,7 +551,6 @@
     <implementation implements="nsITimerCallback">
       <constructor>
       <![CDATA[
-        this.setAttribute("animate", !this._shouldAnimate ? "off" : "on");
         if (this.type != "child") {
           var psvc = Components.classes["@mozilla.org/preferences-service;1"]
                                .getService(Components.interfaces.nsIPrefBranch);

toolkit/content/xul.css

@@ -1044,18 +1044,6 @@ prefwindow {
 prefpane {
   -moz-binding: url("chrome://global/content/bindings/preferences.xml#prefpane");  
   -moz-box-orient: vertical;
-  opacity: 0.0;
-}
-
-prefpane[selected="true"] {
-  opacity: 0.0;
-}
-
-prefwindow[animate="off"] > prefpane,
-prefwindow[animate="off"] > prefpane[selected="true"],
-prefwindow[type="child"] > prefpane,
-prefwindow[type="child"] > prefpane[selected="true"] {
-  opacity: 1.0;
 }
 
 prefwindow > .paneDeckContainer {