add: if ((title == null) || (title == "")) { title = url; } 
context:   function BrowserAddBookmark(url,title)  {    var bmks = Components.classes["component://netscape/browser/bookmarks-service"].getService();    bmks = bmks.QueryInterface(Components.interfaces.nsIBookmarksService);    bmks.AddBookmark(url, title);  }
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/8e6c603637fbe7e5a032cf1b534238229776fba1/navigator.js/clean/xpfe/browser/resources/content/navigator.js