(function($){$.fn.jCarouselLite=function(o){o=$.extend({btnPrev:null,btnNext:null,btnGo:null,mouseWheel:false,auto:null,speed:200,easing:null,vertical:false,circular:true,visible:3,start:0,scroll:1,beforeStart:null,afterEnd:null},o||{});return this.each(function(){var b=false,animCss=o.vertical?"top":"left",sizeCss=o.vertical?"height":"width";var c=$(this),ul=$("ul",c),tLi=$("li",ul),tl=tLi.size(),v=o.visible;if(o.circular){ul.prepend(tLi.slice(tl-v-1+1).clone()).append(tLi.slice(0,v).clone());o.start+=v}var f=$("li",ul),itemLength=f.size(),curr=o.start;c.css("visibility","visible");f.css({overflow:"hidden",float:o.vertical?"none":"left"});ul.css({margin:"0",padding:"0",position:"relative","list-style-type":"none","z-index":"1"});c.css({overflow:"hidden",position:"relative","z-index":"2",left:"0px"});var g=o.vertical?height(f):width(f);var h=g*itemLength;var j=g*v;f.css({width:f.width(),height:f.height()});ul.css(sizeCss,h+"px").css(animCss,-(curr*g));c.css(sizeCss,j+"px");if(o.btnPrev)$(o.btnPrev).click(function(){return go(curr-o.scroll)});if(o.btnNext)$(o.btnNext).click(function(){return go(curr+o.scroll)});if(o.btnGo)$.each(o.btnGo,function(i,a){$(a).click(function(){return go(o.circular?o.visible+i:i)})});if(o.mouseWheel&&c.mousewheel)c.mousewheel(function(e,d){return d>0?go(curr-o.scroll):go(curr+o.scroll)});if(o.auto)setInterval(function(){go(curr+o.scroll)},o.auto+o.speed);function vis(){return f.slice(curr).slice(0,v)};function go(a){if(!b){if(o.beforeStart)o.beforeStart.call(this,vis());if(o.circular){if(a<=o.start-v-1){ul.css(animCss,-((itemLength-(v*2))*g)+"px");curr=a==o.start-v-1?itemLength-(v*2)-1:itemLength-(v*2)-o.scroll}else if(a>=itemLength-v+1){ul.css(animCss,-((v)*g)+"px");curr=a==itemLength-v+1?v+1:v+o.scroll}else curr=a}else{if(a<0||a>itemLength-v)return;else curr=a}b=true;ul.animate(animCss=="left"?{left:-(curr*g)}:{top:-(curr*g)},o.speed,o.easing,function(){if(o.afterEnd)o.afterEnd.call(this,vis());b=false});if(!o.circular){$(o.btnPrev+","+o.btnNext).removeClass("disabled");$((curr-o.scroll<0&&o.btnPrev)||(curr+o.scroll>itemLength-v&&o.btnNext)||[]).addClass("disabled")}}return false}})};function css(a,b){return parseInt($.css(a[0],b))||0};function width(a){return a[0].offsetWidth+css(a,'marginLeft')+css(a,'marginRight')};function height(a){return a[0].offsetHeight+css(a,'marginTop')+css(a,'marginBottom')}})(jQuery);

$(function(){
	// 設定
	// バナーBOXを指定
	var bannerBox = '#carouselBox';
	// バナーのスクロール数を指定
	var viewAmount = 3;
	// Prevボタンを指定
	var buttonPrev = 'a.pg_prev';
	// Nextボタンを指定
	var buttonNext = 'a.pg_next';
	// ページボタンBOXを指定
	var pageControlBox = 'ul.pg_pagenums';
	// ページボタンのON表示classを指定
	var pageButtonOnClass = 'on';
	// ページボタン関連Wrapの幅調整するか？
	// 幅調整する場合は、コード要調整
	var pageControlWrapFlex = true;
	// 設定ここまで
	
	var bannerUl = $('ul', bannerBox);
	var banners = $('li', bannerUl);
	var bannerLength = banners.length;
	var newBannerLength = bannerLength;
	
	// 空のliを追加
	if (bannerLength % viewAmount != 0) {
		for (i=0;i<viewAmount - bannerLength % viewAmount;i++) {
			bannerUl.append('<li>&nbsp;</li>');
			newBannerLength++;
		}
	}
	
	// バナーへID割り当て
	banners.each(function(){
		$(this).attr('id','bnr'+banners.index(this));
	});
	
	// ページボタン複製
	var pageControlButton = $(pageControlBox+' > *');
	for (i=0;i<newBannerLength - 1;i++) {
		pageControlButton.clone().appendTo(pageControlBox)
			.filter(function () {
				return (i+1) % viewAmount != 0;
			})
			.css('display', 'none');
	}
	pageControlButton.addClass(pageButtonOnClass);
	if (pageControlWrapFlex) {
  	// ページボタン関連Wrapの幅調整する場合は、この辺を調整する必要がある
		var pageControlBoxWrap = pageControlButton.parent().parent();
		pageControlBoxWrap.width(pageControlBoxWrap.width() + $(pageControlBox+' > *:visible').length * pageControlButton.width());
	}
	
	// カルーセル処理
	var pageControlButtonList = $(pageControlBox+' > *');
	$(bannerBox).jCarouselLite({
		btnNext:buttonNext,
		btnPrev:buttonPrev,
		scroll:viewAmount,
		auto:6000,
		speed:500,
		btnGo:pageControlButtonList,
		afterEnd:function(a) {
			var idx = eval(a[0].id.replace('bnr',''));
			pageControlButtonList.removeClass(pageButtonOnClass)
				.eq(idx).addClass(pageButtonOnClass);
		}
	});
});