scrollbar iframe in javascript

I would like to add a scrollbar when the contents of the iframe is too large and does not appear.

I am trying the following:

parent.iframepage.style.height = "350px"; parent.iframepage.style.width = "500px"; parent.iframepage.contentarea.style.height = "350px"; parent.iframepage.contentarea.style.width = "500px"; parent.iframepage.contentarea.s开发者_Python百科tyle.overflow = "visible";

any help please?

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Surely the correct syntax would be ...

parent.iframepage.style.overflow = "auto";

I'd recommend doing it in the stylesheet.

iframe
{
    overflow: auto;
}

You should qualify it better, with an ID, class or such.

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You can modify the content of the iframe only if it is from the same domain as the parent document.