Elastic jQuery plugin makes your textareas grow and shrink to fit it’s content. It was inspired by the auto growing textareas on Facebook. The major difference between Elastic and it’s competitors is it’s weight. The usage of Elastic is very straight forward. All you have to do is include the javascript file containing the plugin and use the elastic method.

Elastic Textarea jQuery Plugin

Requirements: jQuery Framework
Demo: http://www.unwrongest.com/projects/elastic/
License: License Free