/*
 * jquery-auto-height.js
 *
 * Copyright (c) 2010 Tomohiro Okuwaki (http://www.tinybeans.net/blog/)
 * Licensed under MIT Lisence:
 * http://www.opensource.org/licenses/mit-license.php
 * http://sourceforge.jp/projects/opensource/wiki/licenses%2FMIT_license
 *
 * Since:   2010-04-19
 * Update:  2010-07-02
 * version: 0.03
 * Comment: 
 *
 * jQuery 1.2 later
 * 
 */

(function($){
	$.fn.autoHeight = function(options){
		var op = $.extend({
		
			column  : 0,
			clear   : 0,
			height  : 'minHeight',
			reset   : '',
			descend : function descend (a,b){ return b-a; }
		
		},options || {}); // optionsに値があれば上書きする

		var self = $(this);
		var n = 0,
			hMax,
			hList = new Array(),
			hListLine = new Array();
			hListLine[n] = 0;

		// 要素の高さを取得
		self.each(function(i){
			if (op.reset == 'reset') {
				$(this).removeAttr('style');
			}
			var h = $(this).height();
			hList[i] = h;
			if (op.column > 1) {
				// op.columnごとの最大値を格納していく
				if (h > hListLine[n]) {
					hListLine[n] = h;
				}
				if ( (i > 0) && (((i+1) % op.column) == 0) ) {
					n++;
					hListLine[n] = 0;
				};
			}
		});

		// 取得した高さの数値を降順に並べ替え
		hList = hList.sort(op.descend);
		hMax = hList[0];
		
		// 高さの最大値を要素に適用
		var browser = $.browser.version;
		if (op.column > 1) {
			for (var j=0; j<hListLine.length; j++) {
				for (var k=0; k<op.column; k++) {
					if (browser == '6.0') {
						self.eq(j*op.column+k).height(hListLine[j]);
						if (k == 0 && op.clear != 0) self.eq(j*op.column+k).css('clear','both');
					} else {
						self.eq(j*op.column+k).css(op.height,hListLine[j]);
						if (k == 0 && op.clear != 0) self.eq(j*op.column+k).css('clear','both');
					}
				}
			}
		} else {
			if (browser == '6.0') {
				self.height(hMax);
			} else {
				self.css(op.height,hMax);
			}
		}
	};
	$.fn.autoHeightX = function(){
		this.height( Math.max.apply( null, this.map( function () { return $(this).height(); } ).get() ) );
		return this;
	};
})(jQuery);