Change iframe scrollbar height without changing iframe height

Is there any way to make an iframe's vertical scrollbar shorter than the iframe itself? For instance have a 500px high iframe with a 450px high scrollbar (but the scrollbar would still fully pan the iframe's content).开发者_JAVA技巧

(with Javascript, jQuery, or CSS)

Thanks in advance!

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You could create a custom scroll bar with JavaScript.

All the usual caveats apply - usability, etc

Hey c'mere grandson, this scroll bar thingo is smaller than the panel, I don't know how to use it. Maybe I'll try another website...

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You can always go for the dumb approach and embed a smaller scrollable frame as part of that iframe (which would not need to be scrollable at all then).