How do you resize a popup using Javascript?

I have a bookmarklet that opens a small popup using window.open() and have set the width and height on it. Usually when it opens the content is the right size f开发者_运维技巧or the window. But there is one specific time where I need to display a bigger piece of content to the user.

How can I use javascript from the page displayed in the popup to resize it?

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Use window.resizeTo(). (https://developer.mozilla.org/en/DOM/window.resizeTo)

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Use window.resizeBy() instead. It's far simpler.

Code.