Jari Jokinen

Want to hide navigation bar when user scrolls down, and then again show it when user scrolls up? This is where you'd want to detect the scroll direction using JavaScript.

Linked list is one of the most simplest and most common data structures out there. Implementing linked lists in C is easy by using structs and pointers.

Latest jQuery UI comes with a new position() method that makes it easy to center any element vertically and horizontally.

Here's my Capistrano recipe for Passenger.