Interesting. It would have taken me a while to figure that out. (Though I'm aware there was an alphabet before Cyrillic, I wouldn't have recognized it right away.)
There's plenty of information and a table for transcribing it here:
http://en.wikipedia.org/wiki/Glagolitic_alphabetSo it may be very difficult to find someone who can actually translate that for you, but at least now you know what it is.
If you want to try to analyze it yourself, it looks like you'll have to do it by hand-- I don't see any information online about OCR (Optical Character Recognition) for image>text conversion (as exists for many modern scripts).
Freknu, is it possible that those letters are actually acting as line/verse numbers? I know that at least in Hebrew letters were assigned sequential values to identify text sections (something like roman numerals, but more transparent).