Is there a library that gives me a stable API with which I can handle mouse input for Javascript? All that I do is not mouse processing, but if tjere is a great library that doesn't affect other things too, that's fine too.
Mouse processing seems a bit vague, but here are a few plugins in the jQuery library that might interest you:
mootools... jquery ( mootools). , , .
, 22k ?
dojotoolkit . But I think it will be a holy war.