As of Firefox 21,pressing Ctrl+F slides in the find bar into view.What should I change in about:config to revert it back and make it popup instantaneously?

Question

The question pretty much sums up what I want to ask. Thank you very much for any and all help.
I know this is not the place to rant but I think this needs to be said - Why do you(firefox devs) guys keep on changing things that were perfectly fine in the first place? For example, making the find bar slide in and out of view may "look cool" but it consumes more system resources(albeit very very little) than making it appear instantaneously(the way it was previously).

Answer 1

This is done via CSS transitions: chrome://global/skin/findBar.css
*https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Using_CSS_transitions
Add code to the userChrome.css file below the default @namespace line.
*http://kb.mozillazine.org/userChrome.css
The customization files userChrome.css (interface) and userContent.css (websites) are located in the chrome folder in the Firefox profile folder.
*http://kb.mozillazine.org/Editing_configuration
<pre><nowiki>@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* only needed once */
findbar { transition-property: none !important; }
</nowiki></pre>