Check the post
Text Area Auto Xpander 1.0
on
http://swapnilsarwe.phpnet.us/
* In this 0.9 version too, by default all textarea gets this Xpansion functionality. Because I think its must for all textareas and not for just selected texareas. Still having an option to do it either way would be nice to have. * Also if textarea at the beginning itself has more text that the specific height of the texarea, in that case the change in the texarea is necessary to trigger the expand in textarea as per the content. Thats the tough one since I am not that good in events. Still would like to fix this issue to soon.
Well friends, I have updated the snippet with some of the options like "extra space", "delay to expand (available in XpanderAnim.js)" and "callback function (which executes everytime the textarea expands.)"