Sorted:

Checking for references-Collection of common programming errors

Return an array value from included file in a function-Collection of common programming errors

Dynamic array in jQuery-Collection of common programming errors

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