Login Time Out

When the user tries to log in to the site, the request seems to time out (a new small window opens and nothing happens)

Taking a look at the small window that opens, under google chrome I get this error message:

2Unsafe JavaScript attempt to access frame with URL http://website.com/wp-login.php from frame with URL.
I don't know how to make the login work. Is there anything I am missing

Safari is also showing the same symptoms.