新編日本古典文学全集 is now available online by JapanKnowledge
JapanKnowledge starts to upload all 88 volumes of the set and the first title now available is 「源氏物語」. You can do full text search on Japanese Classics and, unlike Japanese eBooks on NetLibrary, a page fit to a computer screen with readable size of character.
Description (free access)
JapanKnowledge (limited for Pitt users, off campus access http://www.library.pitt.edu/services/remote.html)