How could I do cross side scripting

I have a page with two frames located at diferent domains. Im triying to read and write from one to the other. I tried with old operas with not success (also tried with firefox 3, opera 8.5 & IExplorer 7). I know that I can't do cross side scripting because of the security policy of the browsers. Anyway, how could I disable this security policy (http://www.mozilla.org/projects/security/components/same-origin.html) on any browser ? Is there a modern browser capable of executing code like:

parent.frames['left'].document.getElementById('song_name').value = 'blabla';

?

Thanks in advance.