Firefox, kako promijeniti visinu bookmark bar-a?

Firefox 4 i Ubuntu, sam ubuntu ima onaj gornji task bar pa jos i bookmarks su ogromni (sto se tice visine u px) pa me zanimalo kako  mogu smanjiti visinu bookmarks bar-a, neki addon? ili koji file u ff da promijenim?

evo jesam, napravio sam userChrome.css i sada je smanjeno kako spada, medutim sad vise neide do kraja sto je opet bzvz..

Moji css kod

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* set default namespace to XUL *
/* Bookmarks Toolbar - Shrink Font and Size*/
#PersonalToolbar {
    font-size: 75% !important;
    padding: 0px !important;
    margin: 0px !important;
    max-height: 23px !important;
    }
    /* Seperators - Remove */
    #PersonalToolbar toolbarseparator {
       display: none !important;
       }
    /* Toolbar Buttons - Reduce Margins */
    #PersonalToolbar toolbarbutton {
       margin: 0 -5px 0 -1px !important;
       }
    /* Toolbar Icons - Shrink and Reduce Margins */
    #PersonalToolbar .toolbarbutton-icon {
       max-width: 12px !important;
       max-height: 12px !important;
       margin: 0px 2px 0px 0px !important;
       }
/* URL Bar and Search Bar - Shrink and Fade Text*/
#urlbar, #searchbar{
    font-size: 85% !important;
    color: #333 !important;
        max-height: 25px !important;
    }