There are 1 previous version of this script.
// ==UserScript==
// @name Collapse GMail Labels
// @namespace http://sournote.org/scripts
// @description Collapses gmail labels to a small box, which expands when hovered over
// @include http*://mail.google.com/*
// ==/UserScript==
GM_addStyle(".av { width: 5px; text-indent: -9999px; }");
GM_addStyle(".av:hover { width: auto; text-indent: 0px; }");