YUI provides a very rich set of controls and widgets that you can use to make your applications pop.

YUI 提供一组丰富的控件和小部件，使用它们能使您的应用程序更流行。

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Finally, we need to add a conditional pop-up contribution to the sample application.

最后，需要向样例应用程序中添加一个有条件弹出式组件。

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Two key CSS properties are also applied to the pop-up dialog container to make it work.

另外，还对弹出对话框容器应用了两个重要属性以确保它正确运行。

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