External browsing in contentbox

[Xelation]

Heya guys!

My problem, am working with boxes (divboxes) as in my menubox the hyperlinks refers to *.inc.php files wich open in my contentbox. In my css I've put the contenboxes autoflow at 'auto', wich allows the contentbox to be as large in height and width as the content of the *.inc.php php it is to show.

But how can you open offsite pages like for examp. www.polarhome.com or even my own forum (use phpbb) in the contentbox. I've tried it with an iframe, but the contentbox won't show anything. I think it has to do with the fact that the contentbox doesn't know how large it is suppose to be. I've tried scripts for auto height and width, but the only work with the iframe.

Does anyone have any clue?