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Remove Junk From Gaia Signatures NOT aquariums

Removes scion license, car, etc. It does NOT remove the standard signature which is controlled from your account settings. Excludes aquariums because there is a game associated with it.

// ==UserScript==
// @name           Remove Junk From Gaia Signatures NOT aquariums 
// @description    Removes scion license, car, etc. It does NOT remove the standard signature which is controlled from your account settings. Excludes aquariums because there is a game associated with it. 
// @include        http://*.gaiaonline.com/forum/*
// @include        http://gaiaonline.com/forum/*
// @include        https://*.gaiaonline.com/forum/*
// @include        https://gaiaonline.com/forum/*
// @version 0.0.1.20140525024111
// @namespace https://greasyfork.org/users/2178
// ==/UserScript==
function addGlobalStyle(css) {
    var head, style;
    head = document.getElementsByTagName('head')[0];
    if (!head) { return; }
    style = document.createElement('style');
    style.type = 'text/css';
    style.innerHTML = css;
    head.appendChild(style);
}

addGlobalStyle(
'.extra_sigs div:not(.forum-flash-signature) {display:none}' );