Recommendation: Avoid doing smart things like moving the scrollbars explicitly.

建议：明确避免移动滚动条这类智能化操作。

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It is called from within an HTML tag, which limits the main panel's size, and displays scrollbars if necessary.

它从HTML标记中调用，该标记限制主面板的尺寸，并且，如果需要的话，将显示滚动栏。

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The menus, toolbars, scrollbars, and dialog boxes of many Mozilla-based browsers are built using XUL documents.

有很多基于Mozilla的浏览器，它们的菜单、工具栏、滚动条、对话框等等都是用XUL文档构建的。

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