I just checked to see if my web page functions in Opera (10.51). Everything displays perfectly but the flash buttons don't work. My code (validated by W3 for doctype XHTML 1.0 Transitional) for the Home button is:
Never mind. I just tried again and the flash buttons are working. You do have to wait a moment before clicking on a flash button so perhaps there's more of a delay with the Opera browser to load the flash as opposed to IE or Firefox.