@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);
/*Multi Row BookmarksToolbar (Scrollable)(Fx3.6a1pre))*/ 
#personal-bookmarks{
display:block !important;
min-height: 0px !important;
max-height: 500px !important;
height: auto !important;
overflow-y:visible !important;
}
#bookmarksBarContent{
display:block !important;
min-height: 0px !important;
max-height: 500px !important; /*you can change*/
height: auto !important;
overflow-y:auto !important;
}
#bookmarksBarContent .bookmarks-toolbar-items{
display:block !important;
height: auto !important;
}
#bookmarksBarContent toolbarseparator{
display:inline !important;
}
#bookmarksBarContent .bookmark-item{
visibility: visible !important;
}
.chevron{
display:none !important;
}
.toolbar-drop-indicator-bar,
.toolbar-drop-indicator{
margin-bottom:0px !important;
}
.toolbar-drop-indicator{
background-position:0% 0% !important;
}
#bookmarksBarContent > vbox {
display:-moz-stack !important;
}

/*Fixed height of toolber, you should add following css to userChrome.css*/
/*
#bookmarksBarContent{
max-height: 96px !important;
}
*/