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I explored a few options - the reason I decided to make it controlled by the user was so it didn't have to open in a new window (as you can only control the width of the window with JS in a separate window).

Thanks for the feedback though - might create a separate self-running version at some point.

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This only works when resizing the window? Would an ever-increasing div work? If you floated it right the size would always increase on the left, mimicking the drag and resize action that the user is doing.

That said, I get that you're pushing the limits as it is here and you've likely already considered this as an option.

Yeh, can use resizeTo but only when you have a separate window.

Not sure if an increasing div would work. Could potentially do it as an iframe, but not sure how nicely that'd work, would have to try it out.

Think I'll release it as a separate full animation at some point - will write up how it's all put together when I do.

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