/*
* Simple Auto Expanding Text Area (0.1.2-dev)
* by Antti Kaihola (antti.kaihola.fi)
* akaihol+jquery@ambitone.com
*
* Copyright (c) 2009 Antti Kaihola (antti.kaihola.fi)
* Licensed under the MIT and BSD licenses.
*
* NOTE: This script requires jQuery to work. Download jQuery at
* www.jquery.com
*/
 
(function(jQuery) {
 
  jQuery.fn.simpleautogrow = function() {
    return this.each(function() { new jQuery.simpleautogrow(this); }); };
 
  jQuery.simpleautogrow = function (e) {
    var self = this;
    var $e = this.textarea = jQuery(e)
      .css({overflow: 'hidden', display: 'block'})
      .keypress(function (e){self.checkExpand();})      
      .bind('focus', function() {      
        this.timer = window.setInterval(function() {self.checkExpand(); }, 100); })
      .bind('blur', function() { clearInterval(this.timer); });
    this.border = $e.outerHeight() - $e.innerHeight();
    this.clone = $e.clone().css({position: 'absolute', visibility: 'hidden'}).attr('name', '')
    $e.height(e.scrollHeight + this.border)
      .after(this.clone);    
    //this.textarea.click();
    //this.textarea.focus();
    //this.focus();
    this.textarea.select();
    this.textarea.focus();   
    
    this.checkExpand(); 
    };
 
  jQuery.simpleautogrow.prototype.checkExpand = function() {
    var target_height = this.clone[0].scrollHeight + this.border;
    if (this.textarea.outerHeight() != target_height)
      this.textarea.height(target_height + 'px');
    this.clone.attr('value', this.textarea.attr('value')).height(0); };
 
})(jQuery);