var j$ = jQuery;

	j$(function(){

	function setBackground() {
		var $last = j$(".acc > li:last > a");
		if($last.hasClass("close"))
			$last.css("background-position", "left bottom");
		else
			$last.css("background-position", "left -30px");
	}

	j$(".acc").each(function(){
		j$("li > ul"            , this).wrap("<div></div>");
		j$("li > div:not(:last)", this).append("<div class='notlast'>&nbsp;</div>");
		j$("li > div:last"      , this).append("<div class='last'>&nbsp;</div>");

		j$(" > li > a", this).each(function(index){
			var $this = j$(this);

			if(index > -1) 
				$this.addClass("close").next().hide();
			else
				$this.css("background-position", "left top");

			setBackground();

			var prms = {height:"toggle", opacity:"toggle"};
			$this.click(function(){
				j$(this).toggleClass("close").next().animate(prms, {duration:"fast"})
					.parent().siblings().children("div:visible").animate(prms, {duration:"fast"}).prev().addClass("close");
				setBackground();
				return false;
			});
		});
	});
});