Sorted:

Rewrite Jquery fadeIn() to use CSS3 transitions-Collection of common programming errors

problem about relative-date-Collection of common programming errors

Jquery disable element on checkbox change-Collection of common programming errors

problem about active-Collection of common programming errors

Identify $(this) in jQuery-Collection of common programming errors

In emacs, how can I add a function to hook when the function hasn't yet been defined?-Collection of common programming errors

Comparing design by contract to type systems-Collection of common programming errors

C's pow function refuses to work with variable exponent-Collection of common programming errors

object has no hasOwnProperty method (i.e. it's undefined) – IE8-Collection of common programming errors

Undefined method `level` for Mongoid logger in a Rails app-Collection of common programming errors