Ah, I found it. It's in the order of things:
You have to first create your view and expand the template:
Code:
html = AjxTemplate.expand(
"eu_zedach_catering.templates.cateringDialog#CateringDialog"
);
this.cateringView.setSize('25em', '12em');
this.cateringView.getHtmlElement().innerHTML = html;
this.cateringDialog.setView(this.cateringView); and after that create the form elements and reparent them to the DIVs in your template after that.
That way it works in IE and FF.
Kind regards
Dennis