I am trying to delete a bookmark to a URL that is now defunct. The star in the address box does not turn blue when the message telling the web page cannot be found appears. When I click on the outline of the star, it turns blue. I click on the now blue star and the dialog box for deleting the bookmark then opens. I click on "delete bookmark" and close the popup window, but the bookmark remains in my book mark folder. How can I clean it up to remove that bookmark?