(function($) {

	$.fn.easySlider = function(options){
	  
		// default configuration properties
		var defaults = {			
			prevId: 		'prevBtn',
			prevText: 		'Previous',
			nextId: 		'nextBtn',	
			nextText: 		'Next',
			controlsShow:	true,
			controlsBefore:	'',
			controlsAfter:	'',	
			controlsFade:	true,
			firstId: 		'firstBtn',
			firstText: 		'First',
			firstShow:		false,
			lastId: 		'lastBtn',	
			lastText: 		'Last',
			lastShow:		false,				
			vertical:		false,
			speed: 			800,
			auto:			false,
			pause:			2000,
			continuous:		false, 
			numeric: 		false,
			numericId: 		'controls'
		}; 
		
		var options = $.extend(defaults, options);  
				
		this.each(function() {  
			var obj = $(this); 				
			var s = $("li", obj).length;
			var w = $("li", obj).width(); 
			var h = $("li", obj).height(); 
			var clickable = true;
			obj.width(w); 
			obj.height(h); 
			obj.css("overflow","hidden");
			var ts = s-1;
			var t = 0;
			$("ul", obj).css('width',s*w);			
			
			if(options.continuous){
				$("ul", obj).prepend($("ul li:last-child", obj).clone().css("margin-left","-"+ w +"px"));
				$("ul", obj).append($("ul li:nth-child(2)", obj).clone());
				$("ul", obj).css('width',(s+1)*w);
			};				
			
			if(!options.vertical) $("li", obj).css('float','left');
/*								
			if(options.controlsShow){
				var html = options.controlsBefore;				
				if(options.numeric){
					html += '<ol id="'+ options.numericId +'"></ol>';
				} else {
					if(options.firstShow) html += '<span id="'+ options.firstId +'"><a href=\"javascript:void(0);\">'+ options.firstText +'</a></span>';
					html += ' <span id="'+ options.prevId +'"><a href=\"javascript:void(0);\">'+ options.prevText +'</a></span>';
					html += ' <span id="'+ options.nextId +'"><a href=\"javascript:void(0);\">'+ options.nextText +'</a></span>';
					if(options.lastShow) html += ' <span id="'+ options.lastId +'"><a href=\"javascript:void(0);\">'+ options.lastText +'</a></span>';				
				};
				
				html += options.controlsAfter;						
				$(obj).after(html);										
			};
*/
			if(options.controlsShow){
				var html = options.controlsBefore;				
				if(options.numeric){
					html += '<ol id="'+ options.numericId +'"></ol>';
				} else {
					if(options.firstShow) html += '<span id="'+ options.firstId +'"><a href=\"javascript:void(0);\">'+ options.firstText +'</a></span>';
					html += ' <span id="'+ options.prevId +'"><a href=\"javascript:void(0);\">'+ options.prevText +'</a></span>';
					html += ' <span id="'+ options.nextId +'"><a href=\"javascript:void(0);\">'+ options.nextText +'</a></span>';
					if(options.lastShow) html += ' <span id="'+ options.lastId +'"><a href=\"javascript:void(0);\">'+ options.lastText +'</a></span>';				
				};
				
				html += options.controlsAfter;						
				$(obj).after(html);										
			};
			if(options.numeric){									
				for(var i=0;i<s;i++){						
					$(document.createElement("li"))
						.attr('id',options.numericId + (i+1))
						.html('<a rel='+ i +' href=\"javascript:void(0);\">'+ (i+1) +'</a>')
						.appendTo($("#"+ options.numericId))
						.click(function(){							
							animate($("a",$(this)).attr('rel'),true);
						}); 												
				};							
			} else {
				$("a","#"+options.nextId).click(function(){		
					animate("next",true);
				});
				$("a","#"+options.prevId).click(function(){		
					animate("prev",true);				
				});	
				$("a","#"+options.firstId).click(function(){		
					animate("first",true);
				});				
				$("a","#"+options.lastId).click(function(){		
					animate("last",true);				
				});				
			};
			
			function setCurrent(i){
				i = parseInt(i)+1;
				$("li", "#" + options.numericId).removeClass("current");
				$("li#" + options.numericId + i).addClass("current");
			};
			
			function adjust(){
				if(t>ts) t=0;		
				if(t<0) t=ts;	
				if(!options.vertical) {
					$("ul",obj).css("margin-left",(t*w*-1));
				} else {
					$("ul",obj).css("margin-left",(t*h*-1));
				}
				clickable = true;
				if(options.numeric) setCurrent(t);
			};
			
			function animate(dir,clicked){
				if (clickable){
					clickable = false;
					var ot = t;				
					switch(dir){
						case "next":
							t = (ot>=ts) ? (options.continuous ? t+1 : ts) : t+1;						
							break; 
						case "prev":
							t = (t<=0) ? (options.continuous ? t-1 : 0) : t-1;
							break; 
						case "first":
							t = 0;
							break; 
						case "last":
							t = ts;
							break; 
						default:
							t = dir;
							break; 
					};	
					var diff = Math.abs(ot-t);
					var speed = diff*options.speed;						
					if(!options.vertical) {
						p = (t*w*-1);
						$("ul",obj).animate(
							{ marginLeft: p }, 
							{ queue:false, duration:speed, complete:adjust }
						);				
					} else {
						p = (t*h*-1);
						$("ul",obj).animate(
							{ marginTop: p }, 
							{ queue:false, duration:speed, complete:adjust }
						);					
					};
					
					if(!options.continuous && options.controlsFade){					
						if(t==ts){
							$("a","#"+options.nextId).hide();
							$("a","#"+options.lastId).hide();
						} else {
							$("a","#"+options.nextId).show();
							$("a","#"+options.lastId).show();					
						};
						if(t==0){
							$("a","#"+options.prevId).hide();
							$("a","#"+options.firstId).hide();
						} else {
							$("a","#"+options.prevId).show();
							$("a","#"+options.firstId).show();
						};					
					};				
					
					if(clicked) clearTimeout(timeout);
					if(options.auto && dir=="next" && !clicked){;
						timeout = setTimeout(function(){
							animate("next",false);
						},diff*options.speed+options.pause);
					};
			
				};
				
			};
			// init
			var timeout;
			if(options.auto){;
				timeout = setTimeout(function(){
					animate("next",false);
				},options.pause);
			};		
			
			if(options.numeric) setCurrent(0);
		
			if(!options.continuous && options.controlsFade){					
				$("a","#"+options.prevId).hide();
				$("a","#"+options.firstId).hide();				
			};				
			
		});
	  
	};

})(jQuery);
$.fn.extend({
	jscroll:function(j){
		return this.each(function(){
			j = j || {}
			j.Bar = j.Bar||{};//2级对象
			j.Btn = j.Btn||{};//2级对象
			j.Bar.Bg = j.Bar.Bg||{};//3级对象
			j.Bar.Bd = j.Bar.Bd||{};//3级对象
			j.Btn.uBg = j.Btn.uBg||{};//3级对象
			j.Btn.dBg = j.Btn.dBg||{};//3级对象
			var jun = { W:"15px"
						,BgUrl:""
						,Bg:"#efefef"
						,Bar:{  Pos:"up"
								,Bd:{Out:"#b5b5b5",Hover:"#ccc"}
								,Bg:{Out:"#fff",Hover:"#fff",Focus:"orange"}}
						,Btn:{  btn:true
								,uBg:{Out:"#ccc",Hover:"#fff",Focus:"orange"}
								,dBg:{Out:"#ccc",Hover:"#fff",Focus:"orange"}}
						,Fn:function(){}}
			j.W = j.W||jun.W;
			j.BgUrl = j.BgUrl||jun.BgUrl;
			j.Bg = j.Bg||jun.Bg;
				j.Bar.Pos = j.Bar.Pos||jun.Bar.Pos;
					j.Bar.Bd.Out = j.Bar.Bd.Out||jun.Bar.Bd.Out;
					j.Bar.Bd.Hover = j.Bar.Bd.Hover||jun.Bar.Bd.Hover;
					j.Bar.Bg.Out = j.Bar.Bg.Out||jun.Bar.Bg.Out;
					j.Bar.Bg.Hover = j.Bar.Bg.Hover||jun.Bar.Bg.Hover;
					j.Bar.Bg.Focus = j.Bar.Bg.Focus||jun.Bar.Bg.Focus;
				j.Btn.btn = j.Btn.btn!=undefined?j.Btn.btn:jun.Btn.btn;
					j.Btn.uBg.Out = j.Btn.uBg.Out||jun.Btn.uBg.Out;
					j.Btn.uBg.Hover = j.Btn.uBg.Hover||jun.Btn.uBg.Hover;
					j.Btn.uBg.Focus = j.Btn.uBg.Focus||jun.Btn.uBg.Focus;
					j.Btn.dBg.Out = j.Btn.dBg.Out||jun.Btn.dBg.Out;
					j.Btn.dBg.Hover = j.Btn.dBg.Hover||jun.Btn.dBg.Hover;
					j.Btn.dBg.Focus = j.Btn.dBg.Focus||jun.Btn.dBg.Focus;
			j.Fn = j.Fn||jun.Fn;
			var _self = this;
			var Stime,Sp=0,Isup=0;
			$(_self).css({overflow:"hidden",position:"relative",padding:"0px"});
			var dw = $(_self).width(), dh = $(_self).height()-1;
			var sw = j.W ? parseInt(j.W) : 21;
			var sl = dw - sw
			var bw = j.Btn.btn==true ? sw : 0;
			bw = 33;
			if($(_self).children(".jscroll-c").height()==null){//存在性检测
		$(_self).wrapInner("<div class='jscroll-c' style='top:0px;z-index:90;zoom:1;position:relative'></div>");
			$(_self).children(".jscroll-c").prepend("<div style='height:0px;overflow:hidden'></div>");
			$(_self).append("<div class='jscroll-e' unselectable='on' style=' height:100%;top:0px;right:0;-moz-user-select:none;position:absolute;overflow:hidden;z-index:95;'><div class='jscroll-u' style='position:absolute;top:0px;width:100%;left:0;background:blue;overflow:hidden'></div><div class='jscroll-h'  unselectable='on' style='background:green;position:absolute;left:0;-moz-user-select:none;border:1px solid'></div><div class='jscroll-d' style='position:absolute;bottom:0px;width:100%;left:0;background:blue;overflow:hidden'></div></div>");
			}
			var jscrollc = $(_self).children(".jscroll-c");
			var jscrolle = $(_self).children(".jscroll-e");
			var jscrollh = jscrolle.children(".jscroll-h");
			var jscrollu = jscrolle.children(".jscroll-u");
			var jscrolld = jscrolle.children(".jscroll-d");
			if($.browser.msie){document.execCommand("BackgroundImageCache", false, true);}
			jscrollc.css({"padding-right":sw});
			jscrolle.css({width:sw,background:j.Bg,"background-image":j.BgUrl});
			jscrollh.css({top:bw,background:j.Bar.Bg.Out,"background-image":j.BgUrl,"border-color":j.Bar.Bd.Out,width:sw-2,"border":'0px'});
			jscrollu.css({height:bw,background:j.Btn.uBg.Out,"background-image":j.BgUrl});
			jscrolld.css({height:bw,background:j.Btn.dBg.Out,"background-image":j.BgUrl});
			jscrollh.hover(function(){if(Isup==0)$(this).css({background:j.Bar.Bg.Hover,"background-image":j.BgUrl,"border-color":j.Bar.Bd.Hover})},function(){if(Isup==0)$(this).css({background:j.Bar.Bg.Out,"background-image":j.BgUrl,"border-color":j.Bar.Bd.Out})})
			jscrollu.hover(function(){if(Isup==0)$(this).css({background:j.Btn.uBg.Hover,"background-image":j.BgUrl})},function(){if(Isup==0)$(this).css({background:j.Btn.uBg.Out,"background-image":j.BgUrl})})
			jscrolld.hover(function(){if(Isup==0)$(this).css({background:j.Btn.dBg.Hover,"background-image":j.BgUrl})},function(){if(Isup==0)$(this).css({background:j.Btn.dBg.Out,"background-image":j.BgUrl})})
			var sch = jscrollc.height();
			//var sh = Math.pow(dh,2) / sch ;//Math.pow(x,y)x的y次方
			var sh = (dh-2*bw)*dh / sch
			var sh2 = (dh-2*bw)*dh / sch
			//var sh = 27
			//if(sh<10){sh=10}		
			var wh = sh/6//滚动时候跳动幅度
		//	sh = parseInt(sh);
			var curT = 0,allowS=false;
			jscrollh.height(sh);
			if(sch<=dh){jscrollc.css({padding:0});jscrolle.css({display:"none"})}else{allowS=true;}
			if(j.Bar.Pos!="up"){
			curT=dh-sh-bw;
			setT();
			}
			jscrollh.bind("mousedown",function(e){
				j['Fn'] && j['Fn'].call(_self);
				Isup=1;
				jscrollh.css({background:j.Bar.Bg.Focus,"background-image":j.BgUrl,"border":'0px'})
				var pageY = e.pageY ,t = parseInt($(this).css("top"));
				$(document).mousemove(function(e2){
					 curT =t+ e2.pageY - pageY;//pageY浏览器可视区域鼠标位置，screenY屏幕可视区域鼠标位置
						setT();
				});
				$(document).mouseup(function(){
					Isup=0;
					jscrollh.css({background:j.Bar.Bg.Out,"background-image":j.BgUrl,"border-color":j.Bar.Bd.Out,"border":'0px'})
					$(document).unbind();
				});
				return false;
			});
			jscrollu.bind("mousedown",function(e){
			j['Fn'] && j['Fn'].call(_self);
				Isup=1;
				jscrollu.css({background:j.Btn.uBg.Focus,"background-image":j.BgUrl,"border":'0px'})
				_self.timeSetT("u");
				$(document).mouseup(function(){
					Isup=0;
					jscrollu.css({background:j.Btn.uBg.Out,"background-image":j.BgUrl,"border":'0px'})
					$(document).unbind();
					clearTimeout(Stime);
					Sp=0;
				});
				return false;
			});
			jscrolld.bind("mousedown",function(e){
			j['Fn'] && j['Fn'].call(_self);
				Isup=1;
				jscrolld.css({background:j.Btn.dBg.Focus,"background-image":j.BgUrl,"border":'0px'})
				_self.timeSetT("d");
				$(document).mouseup(function(){
					Isup=0;
					jscrolld.css({background:j.Btn.dBg.Out,"background-image":j.BgUrl,"border":'0px'})
					$(document).unbind();
					clearTimeout(Stime);
					Sp=0;
				});
				return false;
			});
			_self.timeSetT = function(d){
				var self=this;
				if(d=="u"){curT-=wh;}else{curT+=wh;}
				setT();
				Sp+=2;
				var t =500 - Sp*50;
				if(t<=0){t=0};
				Stime = setTimeout(function(){self.timeSetT(d);},t);
			}
			jscrolle.bind("mousedown",function(e){
					j['Fn'] && j['Fn'].call(_self);
							curT = curT + e.pageY - jscrollh.offset().top - sh/2;
							asetT();
							return false;
			});
			function asetT(){				
						if(curT<bw){curT=bw;}
						if(curT>dh-sh-bw){curT=dh-sh-bw;}
						jscrollh.stop().animate({top:curT},100);
						var scT = -((curT-bw)*sch/(dh-2*bw));
						jscrollc.stop().animate({top:scT},1000);
			};
			function setT(){				
						if(curT<bw){curT=bw;}
						if(curT>dh-sh-bw){curT=dh-sh-bw;}
						jscrollh.css({top:curT});
						var ma = (curT-bw);
						var scT = -(ma*sch/(dh-2*bw));
						jscrollc.css({top:scT});
			};
		});
	}
});