// Длинным правым кликом открывать и удалять закладки, от 16.05.2016. ..................
(()=> {
   function handleEvent(e) { 
      var target = e.originalTarget;
      try { 
           var sidebar = target.ownerDocument.defaultView.top !== content 
               && target.id == 'bookmarks-view-children';
      } catch(e) { return; };

      if ( (!sidebar && !target._placesNode) || e.button !== 2 ) return;

      if ( sidebar ) {
           var tree = target.parentNode;
           var box = tree.treeBoxObject;
           var row = box.getRowAt(e.clientX, e.clientY); 
           var node = tree.view.nodeForTreeIndex(row);            
           }
      var node = sidebar ? node : target._placesNode,
          id = node.itemId, uri = node.uri, type = e.type;
           
      if ( PlacesUtils.nodeIsContainer(node) ) return;
      window.clearTimeout(handleEvent.timer);           

      if ( type == 'mousedown' ) {                      
           handleEvent.flag = false;       
           handleEvent.timer = setTimeout(()=> {
               handleEvent.flag = true;               
               
               gBrowser.loadOneTab(uri, {relatedToCurrent:true, inBackground:false,  referrerURI:null}); 
               
               var menu = target.parentNode;
               if ( !menu || menu.localName !== 'menupopup' ) return;
               for ( var node = menu; node; node = node.parentNode )
                     node.nodeName == 'menupopup' && node.hidePopup();
           }, 450);  
           }

      if ( type == 'click' && handleEvent.flag ) {
           e.preventDefault();
           e.stopPropagation();
           
           setTimeout(()=> PlacesUtils.bookmarks.removeItem(id), 500);
           }
   };
   ["click", "mousedown"].forEach(type=> addEventListener(type, handleEvent, true) );
})();