Best way to access controls on parent page from a child page popup?

从一个孩子页面弹出访问父页面控件的最佳方式？

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The parent page was telling the child header what to do and it wanted to do something else.

母页面告诉子标头做什么，但是子标头想要做其它的事情。

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The parent page continues its influence and now all of the content is spread across the whole page width.

母网页的影响继续存在，现在所有的内容都扩展在整个网页上。

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Viacom, for its part, is seeking to depose top names from YouTube and its parent company, Google, who might qualify as celebrities themselves, including Google co-founders Larry Page and Sergey Brin, and YouTube co-founders Chad Hurley and Steve Chen.

FORBES: Magazine Article