I read a question about how to hide the NavBar of a Form. After searching in my code sample library, I found a solution I used in a iframe. With a little modification it also worked on a regular form.

if (document.all.tdAreas!=null) {
document.all.tdAreas.parentElement.children[0].style.display='none';
document.all.tdAreas.colSpan=2;
}

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