Ok, for now i did it as iframe. not the best solution, but next week i can spent more time to check whats wrong.

it works now as it should, with both compressed and uncompressed file.

next stage will be to show the level navigation in a larger building, so for this it would be better to have a good solution as described. but i can imagine that ther is something colliding with extensions etc. in the cms.

because from html it runs proper so don'T think it is a issue of the allowed files on the server to deliver.

files and html are from the same location - so it should run - if i can discover the fault.

for sure soemthing stupid - as ever when you hurry ,)