Lint errors and warnings are thrown in some of the UI 1.5a files. I am attaching patch files I made for some of these errors and warnings. Note, lint throws a warning for regular expressions not enclosed in parentheses and I enclosed such, but I notice that the jQuery core doesn't do this so you may want to disregard those changes. There are, however, some additional commas and missing semi-colons that probably need to be addressed.