public void deleteABookmark() {
       if (tree != null) {
         if(tree.getLastSelectedPathComponent() != null)  {
        	if(tree.getLastSelectedPathComponent() == root)
        		return;
        	else {
        		File delFile = new File("bookmarks/" + tree.getLastSelectedPathComponent().toString());
        		if(delFile.exists())
        			delFile.delete();
                treeModel.removeNodeFromParent((MutableTreeNode)tree.getLastSelectedPathComponent());
        	} 
        }
         else return;
       }
       else return;
    }