@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);


@-moz-document url(chrome://browser/content/browser.xul) {
#content > tabbox .tabbrowser-strip{ display:none !important; }
.toolbox-top:hover + stack tabbrowser#content > tabbox .tabbrowser-strip, #content > tabbox .tabbrowser-strip:hover { display: -moz-box !important; }
}