/*************************
  Coppermine Photo Gallery
  ************************
  Copyright (c) 2003-2010 Coppermine Dev Team
  v1.1 originaly written by Gregory DEMAR

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License version 3
  as published by the Free Software Foundation.

  ********************************************
  Coppermine version: 1.5.3
  $HeadURL: https://coppermine.svn.sourceforge.net/svnroot/coppermine/trunk/cpg1.5.x/js/jquery.elastic.js $
  $Revision: 6985 $
  $LastChangedBy: gaugau $
  $Date: 2010-01-02 11:38:29 +0100 (Sa, 02. Jan 2010) $
**********************************************/

/*************************
  jquery.elastic: v1.6
  Homepage: http://www.unwrongest.com/projects/elastic/
  Credits: Jan Järfalk
*************************/


(function($){$.fn.extend({elastic:function(){var mimics=['paddingTop','paddingRight','paddingBottom','paddingLeft','fontSize','lineHeight','fontFamily','width','fontWeight'];return this.each(function(){if(this.type!='textarea'){return false;}
var $textarea=$(this),$twin=$('<div />').css({'position':'absolute','display':'none'}),lineHeight=parseInt($textarea.css('lineHeight'),10)||parseInt($textarea.css('fontSize'),'10'),minheight=parseInt($textarea.css('height'),10)||lineHeight*3,maxheight=parseInt($textarea.css('max-height'),10)||Number.MAX_VALUE,goalheight=0,i=0;$twin.appendTo($textarea.parent());var i=mimics.length;while(i--){$twin.css(mimics[i].toString(),$textarea.css(mimics[i].toString()));}
function setHeightAndOverflow(height,overflow){curratedHeight=Math.floor(parseInt(height,10));if($textarea.height()!=curratedHeight){$textarea.css({'height':curratedHeight+'px','overflow':overflow});}}
function update(){var textareaContent=$textarea.val().replace(/<|>/g,' ').replace(/\n/g,'<br />').replace(/&/g,"&amp;");var twinContent=$twin.html();if(textareaContent+'&nbsp;'!=twinContent){$twin.html(textareaContent+'&nbsp;');if(Math.abs($twin.height()+lineHeight-$textarea.height())>3){var goalheight=$twin.height()+lineHeight;if(goalheight>=maxheight){setHeightAndOverflow(maxheight,'auto');}else if(goalheight<=minheight){setHeightAndOverflow(minheight,'hidden');}else{setHeightAndOverflow(goalheight,'hidden');}}}}
$textarea.css({'overflow':'hidden'}).bind('focus',function(){self.periodicalUpdater=window.setInterval(function(){update();},50);}).bind('blur',function(){clearInterval(self.periodicalUpdater);});update();});}});})(jQuery);