(function ($) {
	$.fn.Slider = function (options) {
	var settings = {width:500, height:200, timeout:3000, overlay:300, effect:"fadeOut"};
	options = options || {};
	$.extend(settings, options);
	return this.each(function () {
		var timer;
		var index = 0;
		var aCount = 0;
		var done = true;
		var a = $(this);
		var aImg = a.find("ul");
		var aCount = $("li", aImg).length;
		$(">:eq(0)", aImg).addClass("selected");
		var dl=$("<dl></dl>");
		a.append(dl);
		for(var i=1;i<=aCount;i++){
			if(i==1){
				dl.append($("<dd class='selected'>"+i+"</dd>"));
			}else{
				dl.append($("<dd>"+i+"</dd>"));
			}
		}
		var aNum = a.find("dl");
		a.css({width:settings.width, height:settings.height});
		aImg.find("img").css({width:settings.width, height:settings.height});
		sliderStart($("ul li", this[0])[0]);
		$("dl dd").bind("click", function () {
			if (done && !$(this).is(".selected")) {
				sliderPlay(a.find("dd").index(this));
			}
		});
		function sliderPlay(ix) {
			if (ix >= 0) {
				index = ix;
			} else {
				index++;
			}
			if (index > aCount - 1) {
				index = 0;
			}
			sliderStop();
			done = false;
			var imgList = $(a).find("ul");
			var imgNum = $(a).find("dl");
			var old = $(">.selected", imgList);
			if (old.length > 0) {
				old.css("z-index", 10);
				$(">:eq(" + index + ")", imgList).addClass("selected").show();
				eval("old." + settings.effect + "(settings.overlay,function() {$(this).css('z-index',1).removeClass('selected');done=true;sliderStart();});");
				imgNum.find("dd.selected").removeClass("selected");
				$(">:eq(" + index + ")", imgNum).addClass("selected");
			}
		}
		function sliderStop() {
			clearTimeout(timer);
		}
		function sliderStart() {
			timer = setTimeout(function () {
				sliderPlay(-1);
				}, settings.timeout);
		}
	});
};
})(jQuery);