Simple jQuery plugin to add vertical autoresize functionality to textareas. Tested and working on Chrome 7, Safari 4, Firefox 3.6 and MSIE6.

Basic usage: $('textarea').autoresize();

You can change some settings to make the plugin work as you want it to:

$('textarea').autoresize({ animate: false });

All options:

onresize: function a function that gets called when the textarea has been resized buffer: float, default: 1 number of extra lines to add to the textarea (keep this over 0 to avoid the textarea jumping) minRows: float, default: 4 the minimal amount of rows to reduce the textarea to animate: true/false, default: true whether or not to animate the resizing of the textarea animationDuration: microseconds, default: 50 duration of animation resizeOnStart: true/false, default: false whether or not to resize the textarea when the plugin is activated