tablesorter

tablesorter is a jQuery plugin for turning a standard HTML table with THEAD and TBODY tags into a sortable table without page refreshes. tablesorter can successfully parse and sort many types of data including linked data in a cell. It has many useful features including:

• Multi-column sorting
• Parsers for sorting text, URIs, integers, currency, floats, IP addresses, dates (ISO, long and short formats), time. Add your own easily
• Support secondary "hidden" sorting (e.g., maintain alphabetical sort when sorting on other criteria)
• Extensibility via widget system
• Cross-browser: IE 6.0+, FF 2+, Safari 2.0+, Opera 9.0+
• Small code size

http://tablesorter.com/docs/