@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);
/* ==UserStyle==
// @name         Show/Hide close tab button with mouse-over
// @author       Roblesolido
// @description	 This show - hide the button to close tabs with the mouse-over.
// ==/UserStyle==*/

.tabbrowser-tabs tab .tab-close-button .toolbarbutton-icon,
.tabbrowser-tabs tab .tabs-closebutton .toolbarbutton-icon
{
display: none !important;
}
.tabbrowser-tabs tab:hover .tab-close-button .toolbarbutton-icon,
.tabbrowser-tabs tab:hover .tabs-closebutton .toolbarbutton-icon
{
display: -moz-box !important;
}