Another way to disable surveys on locked websites.

This one is pretty simple , and it works mostly on all websites , but it has a backdraw , it will compromise your overall browsing experience on the site. It involves disabling Javascript in your browser. In Firefox just click Options , Content , then un-check the radio button called "Enable Javascript". This maneuver will help you block everything that uses Javascript on the webpage , including the survey , or other adds and annoying popups that uses javascript.

Hope this helps :)