Chú ý rằng các dấu sống động như một thư mục, và các tin tức liên kết hành động như đánh dấu trang. Những thay đổi khi những thay đổi trang BBC. Live Bookmark biểu tượng không phân biệt giữa các trang có thức ăn và những người không có nguồn cấp dữ liệu, người dùng sẽ phải dựa vào chú giải công cụ. | 162 Part III Hacking Menus Toolbars and Statusbar Figure 9-6 A live bookmark of the BBC RSS service is shown at the top of the image. Notice that the live bookmark acts as a folder and news articles act as bookmarked links. These change as the BBC page changes. The Live Bookmark icon does not differentiate between pages with feeds and those without feeds users will have to rely on tooltips. Show Mozilla Update Icon The one system icon that we will add to the toolbar is the Mozilla Updates button. This icon is not available directly from the Customize Toolbar menu but it requires that only a couple of lines be added to the file Always display the Mozilla Updates in the toolbar. toolbarbutton type updates visibility visible important Once the file has been saved and Firefox restarted the button with the up arrow shown in Figure 9-7 should appear in the toolbar. The button will be green on your computer screen. A single button click checks the Mozilla web site for updates to Firefox as even Firefox is not immune to the occasional security update. Unfortunately the update icon cannot be moved or repositioned. Mozilla Updates button Figure 9-7 The Mozilla Updates button can be forced on through some userChrome code but unlike the other toolbar items it cannot be moved. Adding Customized Toolbar Buttons Through the use of two extensions that will be introduced here additional buttons can be added to the toolbar much like what you saw with Compact Menus in Chapter 8. You saw the benefits of having the popup blocker reside in the status bar it is immediately accessible instead of requiring four levels of menu navigation. Chapter 9 Hacking Toolbars and the Status Bar 163 The EMButtons Extension With EMButtons icons for the Extension Manager and the Theme Manager will be available from the Customize Toolbar dialog. The EMButtons extension is available at http embfx. Besides the ability to add the two manager icons to the toolbar the .
