How to set document.domain for a dynamically generated IFRAME?

Question

I am implementing CodeMirror (http://marijn.haverbeke.nl/codemirror/) on a page where document.domain needs to be declared (because of other IFRAMES on the page).

Co

Answer 1

Got it to work, finally. A hack inspired by TinyMCE code.

var u = 'javascript:(function(){document.open();document.domain="' + document.domain + '";var ed = window.parent.CodeMirror_boilerplate;document.write(ed);document.close();})()';

frame.src = u;

It sets the document.domain in SRC and not by DOM.