problem with non logged in users viewing the database

problem with non logged in users viewing the database

I created this pupil register to display on my website so that viewers could see the list without loggin in at http://www.wigtonian.org.uk/pupils.htm However now it is challenging them to login- I want them to be able to view the database but not edit it I havent changed anything on my site so I am wondering what has changed to require the login?