Automatically resizing an IFRAME based on it's content size

I had a case today when I must have spent 3 or 4 hours trying various elaborate exaples to try and get an IFrame to resize based upon the size of the target page of that IFrame. Many examples were suggesting have a method in the parent frame, that was to be called by the child frame, and in all instances it would just not work for me.

I found the following to work, and fortunately, it required no ammendments to the target page, just changes to the page that contained the IFRAME.

Firstly, a little snippet of JavaScript was need within the HEAD tags, as shown below:

function resizeMe(obj)
{
var docHeight = dynFrame.document.body.scrollHeight;
obj.style.height = docHeight + 'px';
}

Note that in < IE5.5, you should use offsetHeight rather than scrollHeight.

Then in an IFrame, add the attribute to trigger the resize when the iframe has loaded, as such:

onload="resizeMe(this);"

You should now have a resizing IFrame based on its content.