Marcus,

>today I was able to check the code (last week I was ill). But still the same problem.
>
>oForm = oDoc.forms(0) = "NULL"
>
>Grazy isn't it.
>
>I do not know If you can reach our side in the internet/extranet under?:
>
>http://www.heidelberg.com/extranet/door_rapidlight.html

Looking at the code for the page, it might be related to the tag nesting.

<form><div><table><table></form></table></table>

Can you alter the page?

to move the /form out to the same document level that it is defined in for example:

<form><div><table><table></table></table></form>

When I access it from here I see the same error you are seeing. You might want to try simplifying a test version of the page to just the form itself and see if that works and then add the formatting items back in one at a time to see where it breaks down.