/* 
 * Auto Expanding Text Area (1.2.2)
 * by Chrys Bader (www.chrysbader.com)
 * chrysb@gmail.com
 *
 * Special thanks to:
 * Jake Chapa - jake@hybridstudio.com
 * John Resig - jeresig@gmail.com
 *
 * Copyright (c) 2008 Chrys Bader (www.chrysbader.com)
 * Licensed under the GPL (GPL-LICENSE.txt) license. 
 *
 *
 * NOTE: This script requires jQuery to work.  Download jQuery at www.jquery.com
 *
 */
(function(jQuery){var self=null;jQuery.fn.autogrow=function(o){return this.each(function(){new jQuery.autogrow(this,o);});};jQuery.autogrow=function(e,o){this.options=o||{};this.dummy=null;this.interval=null;this.line_height=this.options.lineHeight||parseInt(jQuery(e).css('line-height'));this.min_height=this.options.minHeight||parseInt(jQuery(e).css('min-height'));this.max_height=this.options.maxHeight||parseInt(jQuery(e).css('max-height'));;this.textarea=jQuery(e);if(this.line_height==NaN)this.line_height=0;this.init();};jQuery.autogrow.fn=jQuery.autogrow.prototype={autogrow: '1.2.2'};jQuery.autogrow.fn.extend=jQuery.autogrow.extend=jQuery.extend;jQuery.autogrow.fn.extend({init: function(){var self=this;this.textarea.css({overflow: 'hidden',display: 'block'});this.textarea.bind('focus',function(){self.startExpand()}).bind('blur',function(){self.stopExpand()});this.checkExpand();},startExpand: function(){var self=this;this.interval=window.setInterval(function(){self.checkExpand()},400);},stopExpand: function(){clearInterval(this.interval);},checkExpand: function(){if(this.dummy==null){this.dummy=jQuery('<div></div>');this.dummy.css({'font-size' : this.textarea.css('font-size'),'font-family': this.textarea.css('font-family'),'width' : this.textarea.css('width'),'padding' : this.textarea.css('padding'),'line-height': this.line_height+'px','overflow-x' : 'hidden','position' : 'absolute','top' : 0,'left' :-9999}).appendTo('body');}var html=this.textarea.val().replace(/(<|>)/g,'');if($.browser.msie){html=html.replace(/\n/g,'<BR>new');}else{html=html.replace(/\n/g,'<br>new');}if(this.dummy.html()!=html){this.dummy.html(html);if(this.max_height>0&&(this.dummy.height()+this.line_height>this.max_height)){this.textarea.css('overflow-y','auto');}else{this.textarea.css('overflow-y','hidden');if(this.textarea.height()<this.dummy.height()+this.line_height||(this.dummy.height()<this.textarea.height())){this.textarea.animate({height:(this.dummy.height()+this.line_height)+'px'},100);}}}}});})(jQuery);