website not displayed in IFrame

I have a Iframe which is supposed to display a website however after it finishes loading the website is not just displayed in the frame as desired - it overrides the mendix solution in the browser. All the other iframes work just fine. Update: I have tried all kind of websites and they are all displayed in the the frame itself. This one website won't even display inside the frame in a standard HTML iframe. Is there a way to force it to do so?
1 answers

The website probably uses a so-called Framekiller. Wikipedia has a nice article about this, including some Framekiller Killers.