/* Frank edited file - you are good to go...*/

/*
 * Do not remove the @namespace line -- it's required for correct functioning
 */
@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* set default namespace to XUL */

/* Hide horizontal tabs at the top of the window #1349
*/
#main-window[tabsintitlebar="true"]:not([extradragspace="true"]) #TabsToolbar {
	opacity: 0;
	pointer-events: none;
}
#main-window:not([tabsintitlebar="true"]) #TabsToolbar {
    visibility: collapse !important;
}

/* tab tree no header bar */
#sidebar-box[sidebarcommand="treestyletab_piro_sakura_ne_jp-sidebar-action"] #sidebar-header {
  display: none;
}

#navigator-toolbox {
    position: relative;
    z-index: 1;
    height: 3px;
    margin-bottom: -3px;
    overflow: hidden;
    transition-property: height;
}

#navigator-toolbox:hover {
    height: 42px;
    transition-property: height;
}