jQuery Countdown is a jQuery plugin that sets a div or span to show a countdown to a given time. The countdown functionality can easily be added to a division with appropriate default settings, although you do need to set the target time.

You can also use images instead of text. It’s possible to count up instead of down. You can stop or pause (lap time) the countdown and resume. It supports Callbacks per tick and/or on expiry. And best of all, it supports over 40 localisations.

Requirements: jQuery Framework
Demo: http://keith-wood.name/countdown.html
License: GPL , MIT License