1) Script Title: iframe ssi2

2) Script URL (on DD): http://www.dynamicdrive.com/dynamici...iframessi2.htm

3) Describe problem:

I can resize a Presta Shop but not a PHPBB3 Forum!

http://www.water2run.com/index.php/ecartron-hho-systeme
http://www.water2run.com/index.php/ecartron-hho-forum

I checked everything: different frame ID's, Browsers, ...
It can only be the forum!

Do you have a recommendation what I could try?
Or - no chance?