Problems with window.open when page sets document.domain

Setting document.domain affects window.open() calls.
TC opens window and uses document.write() to write word to document.
Now for the tests...

1. Test window.open("", "_blank", "width=300,height=300")
2. Test window.open("about:blank", "_blank", "width=300,height=300")
3. Test window.open("data:text/html,%3C!doctype%20html%3E", "_blank", "width=300,height=300")
4. Test window.open("about:blank", "_blank", "width=300,height=300") USING doc.documentElement.innerHTML instead of doc.write()

Expected results: All testcases should show PASSED on green background.

What happens: When document.domain is set to myopera.com:

• First one works but it does not behave same as Second which is a bug because empty first parameter should assume "about:blank" (thanks aleto for pointing this out)
• Rest does not work (shows Error:, name: Error, message: Security violation or similar in Error Console upon calling doc.write())