;(function($){
	$.fn.powerSlider = function(options) {
		return this.each(function() {
			var defualts = {
				handle: "top",
				
				prevNext: true,
				
				Nav: true,
				
				myTitle: false,
				
				speed: 1000,
				
				delayTime: 5000,
				
				clickMode: "click",
				
				sliderNum: 1
			};
			
			var opts = $.extend({}, defualts, options),
				obj = $(this),
				index = 0,
				sliderBox = $(".sliderbox", obj),
				sliderLi = sliderBox.find("li"),
				sliderLiWidth = $(".sliderbox li:eq(0)").outerWidth(),
				liNum = sliderLi.length,
				len = (sliderLi.length) / (opts.sliderNum),
				len = Math.ceil(len),
				sliderNav = $(" .slidernav", obj),
				sliderText = $(" .slidertext", obj),
				prev = $(" .prev", obj),
				next = $(" .next", obj),
				sliderTimer, navHtml = '',
				textHtml = '';
			
			for(var i = 0; i < len; i++) {
				
			}
			
			if(opts.handle == 'fadeTo') {
				if(opts.sliderNum<=1){
					sliderLi.css({
						"position": "absolute",
						"left": "0",
						"top": "0"
					});
				}else{
					sliderLi.each(function(i){
						$(this).css({
							"position":"absolute",
							"left":(i%opts.sliderNum)*(sliderLi.width()),
							"top":"0"
						})
					})
				}
				var nextLen = parseInt(opts.sliderNum -1);
				sliderBox.find("li:gt("+nextLen+")").hide();
				
			}
			
			if(opts.Nav) {
				sliderNav.append(navHtml);
			}
			
			if(opts.sliderNum > 1) {
				sliderLi.css("float", "left");
				
			}
			
			var slidertitle = sliderText.find("li"),
				sliderA = sliderNav.find("li");
			
			slidertitle.eq(0).show();
			
			sliderA.eq(0).addClass("current"), sliderLi.eq(0).addClass("current");
			
			
			function showImg(i, index) {
				var sliderHeight = obj.height(),
					sliderWidth = obj.width();
				slidertitle.hide().eq(index).show();
				sliderA.removeClass("current").eq(index).addClass("current"), sliderLi.removeClass("current").eq(index).addClass("current");

				if(opts.handle == 'top') {
					sliderBox.filter(":not(':animated')").animate({
						"top": -sliderHeight * index
					}, opts.speed);
				} else if(opts.handle == 'left') {
					sliderLi.css("float", "left");
					sliderBox.css("width", len * sliderWidth).filter(":not(':animated')").animate({
						"left": -sliderWidth * index
					}, opts.speed);
				} else if(opts.handle == 'hide') {
					var j = index + 1;
					sliderLi.hide().slice(index * (opts.sliderNum), j * (opts.sliderNum)).show();
				} else if(opts.handle == 'fadeTo') {
					sliderLi.slice(i*(opts.sliderNum),(i+1)*(opts.sliderNum)).fadeOut(opts.speed);
					sliderLi.slice(index*(opts.sliderNum),(index+1)*(opts.sliderNum)).filter(":not(':animated')").fadeIn(opts.speed);
				} else if(opts.handle == 'slideTo') {
					sliderLi.css("z-index", '1').filter(":not(':animated')").slideUp().slice(index*(opts.sliderNum),(index+1)*(opts.sliderNum)).css("z-index", "2").slideDown(opts.speed);
				}
			}
			sliderA.bind(opts.clickMode,function(){
				index = $(this).index();
				var i = sliderA.index($(".slidernav .current:eq(0)"));
				if(index != i) {
					showImg(i, index);
				}
			}).eq(0).trigger(opts.clickMode);
			if(len <= 1) {
				prev.hide();
				next.hide();
			} else {
				if(opts.prevNext) {
					
					prev.click(function() {
						var i = index;
						index -= 1;
						if(index == -1) {
							index = len - 1
						};
						showImg(i, index);
					});
					
					next.click(function() {
						auto();
					});
				}
			}
			
			function auto() {
				var i = index;
				index = (index + 1) % len;

				showImg(i, index);
			}
			
			var settime;
			obj.hover(function(){
				clearInterval(settime);
			},function(){
				settime = setInterval(function(){
					auto();
				},opts.delayTime);
			}).trigger("mouseleave");
			
		});	
	};
})(jQuery);