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

@-moz-document url("chrome://browser/content/browser.xul") {

menuitem[oncommand="openUILink(this.getAttribute('siteURI'), event);"],
menuitem[oncommand="PlacesUIUtils.openContainerNodeInTabs(this.parentNode._resultNode, event);"],
#bookmarksToolbarFolderPopup menuseparator,
#bookmarksBarContent > toolbarbutton > menupopup > menuseparator:last-of-type,
menu[container="true"]>menupopup[placespopup="true"]>menuseparator:nth-last-child(-n+2),
menu[container="true"]>menupopup[placespopup="true"]>menuseparator:nth-last-child(-n+2) + menuitem   {

   display:none   !important;

}

.openintabs-menuseparator,
.openintabs-menuitem,
.bookmarks-actions-menuseparator { 

 display: none !important; 

}

}