Copyright Credits for Images and CSS
The image used at the left of the page header is from the 13th century manuscript Add. 47 2°: Antiphonarium Nidrosiense (fragment), fol. 10 recto, Royal Library Copenhagen.
The outer margins (particularly visible in a wide browser window) are filled with an extract from the "Hartker Antiphonary", a 10th century manuscript, Cod. Sang. 390, page 175, Stiftsbibliothek St. Gallen / Codices Electronici Sangallenses.
The page layout uses CSS adapted and extended from a free template called "Enlighten" by styleshout.