Please set scrolling to None. Also, height setting is irrelevant if you are using Autoheight feature.

There is no secret code or a handshake to make it to work. All you have to do is check the Auto-Height and set scroll to No.

If it doesn't work after that, there must be an unusual issue going on with your page. If you provide me with a url, I can try looking into it.

Anyone who has this issue should understand that Autoheight Javascript code relies on the source page to be in correct state and format for the size to be properly determined. So, for example, if your source page is going to lazy-load some parts of the page, it'll cause issues. We will look into creating some mechanisms taht coujld determine such a change... But, at this point, it's a "limitation" to deal with.

Autosize function depends on the IFrame'd page to return correct size. Sometime, when the page is not properly formatted, or not correctly constructed, it may return incorrect info about itself.

It is entirely possible, that IE "corrects" the problems with the page and calculates the size correctly, and FF (which never attempts to think for the developer) returns things the way they are.

We've tested IFrame autosizing in a plethora of scenarios and it seems to function correctly. So, issues like that seem to rest with the source page.