/*--------------------------------------------------------------------------*
 *
 *  fixHeight JavaScript Library beta1
 *
 *  jQuery required.
 *
 *  MIT-style license.
 *
 *  May 18th , 2009 Written by Koji Kimura
 *  http://www.starryworks.co.jp/
 *
 *--------------------------------------------------------------------------*/

$(document).ready(function(){

	init();
});
var groups = [];
var textHeight = 0;
var $fontSizeDiv;

function init() {
	$(".fixHeight, .fixHeightNAuto, *[class*=fixHeightN]").each(function(){
		var $this = $(this);
		var $children = $(".fixHeightChild",$this);
		if ( !$children.length ) $children = $this.children();
		if ( !$children.length ) return;
		var n = 0;
		if ( $(this).hasClass("fixHeightNAuto") ) n = -1;
		else if ( String($this.attr("class")).match(/fixHeightN([0-9]+)/) ) n = parseInt(String($this.attr("class")).match(/fixHeightN([0-9]+)/)[1]);
		else if ( !$(this).hasClass("fixHeight") ) return;
		groups.push({ parent:this, children:$children, n:n });
	});

	$fontSizeDiv = $(document).append('<div>s</div>');
	setInterval(check,1000);
	$(window).resize(check);
	check();
}

function check() {
	if ( $fontSizeDiv.height() == textHeight ) return;
	textHeight = $fontSizeDiv.height();
	$.each(groups,function(){
		var $children = this.children;
		var n = this.n;
		$children.css("height","auto");
		var maxHeight = 0;
		if ( n == 0 ) {
			$children.each(function(){
				if ( $(this).height() > maxHeight ) maxHeight = $(this).height();
			});
			$children.css("height",maxHeight+"px");
		} else if ( n == -1 ) {
			var top = 0, cnt = 0, st = 0, i = 0;
			$children.each(function(){
				if ( top != $(this).position().top ) {
					if ( cnt > st ) for ( i = st; i < cnt; i++ ) $children.eq(i).css("height",maxHeight+"px");
					top = $(this).position().top;
					maxHeight = 0;
					st = cnt;
				}
				if ( $(this).height() > maxHeight ) maxHeight = $(this).height();
				cnt++;
			});
			if ( cnt > st ) for ( i = st; i < cnt; i++ ) $children.eq(i).css("height",maxHeight+"px");
		} else {
			var maxHeights = [];
			$children.each(function(index){
				if ( index != 0 && index % n == 0 ) {
					maxHeights.push(maxHeight);
					maxHeight = 0;
				}
				if ( $(this).height() > maxHeight ) maxHeight = $(this).height();
			});
			maxHeights.push(maxHeight);
			$children.each(function(index){
				$(this).css("height",maxHeights[Math.floor(index/n)]+"px");
			});
		}
	});
}