How to auto-size an iFrame? [duplicate]

Answer 1

Oli has a solution that will work for me. For the record, the page inside my iFrame is rendered by javascript, so I'll need an infinitesimal delay before reporting back the offsetHeight. It looks like something along these lines:

    $(document).ready(function(){
        setTimeout(setHeight);
    });

    function setHeight() {
        alert(document['body'].offsetHeight);   
    }