Suddenly unable to publish correctly after many trouble-free years. Help please!

I have had two websites on BV for several years: british-cemetery-elvas.org and peninsularwar200.org. When I publish an update on either site, the entire page distorts. http://british-cemetery-elvas.org/estatutos.html http://peninsularwar200.org/events.html All the other pages are ok because I stopped publishing when this happened

Read more here:
Suddenly unable to publish correctly after many trouble-free years. Help please!