Why does the Facebook log in page say, "An error occurred. Please try again." ?

[Ben]

I have had a problem when trying to log into Facebook the past day or so. When I go to the log in page it shows, instead of the Facebook logo, the words: Facebook logo, italicized and underlined. In fact, it shows everything that is normally shown, except that instead of the logo's etc. it shows written out words and the photo advertisement doesn't fully load. I type in the correct address. I had a similar issue when trying to use YouTube as well, but I just reloaded the YouTube page and it works fine each time that happens. Other sites I use don't have these issues. Does anyone have any ideas as to what is going on/ what I could do to correct this? Thanks for any help.