text: /**
   * @classDescription 超级Marquee，可做图片导航，图片轮换
   * @author Aken Li(www.kxbd.com)
   * @date 2009-07-27
   * @dependence jQuery 1.3.2
   * @DOM
   *  	<div id="marquee">
   *  		<ul>
   *   			<li></li>
   *   			<li></li>
   *  		</ul>
   *  	</div>
   * @CSS
   *  	#marquee {width:200px;height:50px;overflow:hidden;}
   * @Usage
   *  	$('#marquee').kxbdSuperMarquee(options);
   * @options
   *		distance:200,//一次滚动的距离
   *		duration:20,//缓动效果，单次移动时间，越小速度越快，为0时无缓动效果
   *		time:5,//停顿时间，单位为秒
   *		direction: 'left',//滚动方向，'left','right','up','down'
   *		scrollAmount:1,//步长
   *		scrollDelay:20//时长，单位为毫秒
   *		isEqual:true,//所有滚动的元素长宽是否相等,true,false
   *		loop: 0,//循环滚动次数，0时无限
   *		btnGo:{left:'#goL',right:'#goR'},//控制方向的按钮ID，有四个属性left,right,up,down分别对应四个方向
   *		eventGo:'click',//鼠标事件
   *		controlBtn:{left:'#goL',right:'#goR'},//控制加速滚动的按钮ID，有四个属性left,right,up,down分别对应四个方向
   *		newAmount:4,//加速滚动的步长
   *		eventA:'mouseenter',//鼠标事件，加速
   *		eventB:'mouseleave',//鼠标事件，原速
   *		navId:'#marqueeNav', //导航容器ID，导航DOM:<ul><li>1</li><li>2</li><ul>,导航CSS:.navOn
   *		eventNav:'click' //导航事件
   */
   var scrollId, rollId, isMove, marqueeId;
  (function($){
  
  	$.fn.kxbdSuperMarquee = function(options){
  		var opts = $.extend({},$.fn.kxbdSuperMarquee.defaults, options);
  		return this.each(function(){
  			var $marquee = $(this);//滚动元素容器
  			var _scrollObj = $marquee.get(0);//滚动元素容器DOM
  			var scrollW = $marquee.width();//滚动元素容器的宽度
  			var scrollH = $marquee.height();//滚动元素容器的高度
  			var $element = $marquee.children(); //滚动元素
  			var $kids = $element.children();//滚动子元素
  			var scrollSize=0;//滚动元素尺寸
  			var _type = (opts.direction == 'left' || opts.direction == 'right') ? 1:0;//滚动类型，1左右，0上下
  			
  			var t,b,c,d,e; //滚动动画的参数,t:当前时间，b:开始的位置，c:改变的位置，d:持续的时间，e:结束的位置
  			var _size, _len; //子元素的尺寸与个数
  			var $nav,$navBtns;
  			var arrPos = []; 
  			var numView = 0; //当前所看子元素
  			var numRoll=0; //轮换的次数
  			var numMoved = 0;//已经移动的距离
  			
  			var cw=0;
  			$kids.each(function(i){
  				cw += $(this)[_type?'outerWidth':'outerHeight']();
  			});
  			if($marquee.find('li').length>0&&_type){
  				while(cw<scrollW){
  				$element.append($kids.clone().addClass('new'));
  				cw=cw+$kids.outerWidth();
  				
  				}
  				$kids = $element.children();
  				scrollW = $marquee.width();
  			}
  			
  			//防止滚动子元素比滚动元素宽而取不到实际滚动子元素宽度
  			$element.css(_type?'width':'height',10000);
  			//获取滚动元素的尺寸
  			var navHtml = '<ul>';
  			if (opts.isEqual) {
  				_size = $kids[_type?'outerWidth':'outerHeight']();
  				_len = $kids.length;
  				scrollSize = _size * _len;
  				for(var i=0;i<_len;i++){
  					arrPos.push(i*_size);
  					navHtml += '<li>'+ (i+1) +'</li>';
  				}
  			}else{
  				$kids.each(function(i){
  					arrPos.push(scrollSize);
  					scrollSize += $(this)[_type?'outerWidth':'outerHeight']();
  					navHtml += '<li>'+ (i+1) +'</li>';
  				});
  			}
  			navHtml += '</ul>';
  			//滚动元素总尺寸小于容器尺寸，不滚动
  			if (scrollSize<(_type?scrollW:scrollH)) return; 
  			//克隆滚动子元素将其插入到滚动元素后，并设定滚动元素宽度
  			$element.append($kids.clone().addClass('new')).css(_type?'width':'height',scrollSize*2);
  			
  			//轮换导航
  			if (opts.navId) {
  				$nav = $(opts.navId).append(navHtml).hover( stop, start );
  				$navBtns = $('li', $nav);
  				$navBtns.each(function(i){
  					$(this).bind(opts.eventNav,function(){
  						if(isMove) return;
  						if(numView==i) return;
  						rollFunc(arrPos[i]);
  						$navBtns.eq(numView).removeClass('navOn');
  						numView = i;
  						$(this).addClass('navOn');
  					});
  				});
  				$navBtns.eq(numView).addClass('navOn');
  			}
  			
  			//设定初始位置
  			if (opts.direction == 'right' || opts.direction == 'down') {
  				_scrollObj[_type?'scrollLeft':'scrollTop'] = scrollSize;
  			}else{
  				_scrollObj[_type?'scrollLeft':'scrollTop'] = 0;
  			}
  			
  			if(opts.isMarquee){
  				//滚动开始
  				//marqueeId = setInterval(scrollFunc, opts.scrollDelay);
  				
  				marqueeId = setTimeout(scrollFunc, opts.scrollDelay);
  				//鼠标划过停止滚动
  				$marquee.hover(
  					function(){
  						clearInterval(marqueeId);
  					},
  					function(){
  						//marqueeId = setInterval(scrollFunc, opts.scrollDelay);
  						clearInterval(marqueeId);
  						marqueeId = setTimeout(scrollFunc, opts.scrollDelay);
  					}
  				);
  				
  				//控制加速运动
  				if(opts.controlBtn){
  					$.each(opts.controlBtn, function(i,val){
  						$(val).bind(opts.eventA,function(){
  							opts.direction = i;
  							opts.oldAmount = opts.scrollAmount;
  							opts.scrollAmount = opts.newAmount;
  						}).bind(opts.eventB,function(){
  							opts.scrollAmount = opts.oldAmount;
  						});
  					});
  				}
  			}else{
  				if(opts.isAuto){
  					//轮换开始
  					start();
  					
  					//鼠标划过停止轮换
  					$marquee.hover( stop, start );
  				}
  			
  				//控制前后走
  				if(opts.btnGo){
  					$.each(opts.btnGo, function(i,val){
  						$(val).bind(opts.eventGo,function(){
  							if(isMove == true) return;
  							opts.direction = i;
  							rollFunc();
  							if (opts.isAuto) {
  								stop();
  								start();
  							}
  						});
  					});
  				}
  			}
  			
  			function scrollFunc(){
  				var _dir = (opts.direction == 'left' || opts.direction == 'right') ? 'scrollLeft':'scrollTop';
  				
  				if(opts.isMarquee){
  					if (opts.loop > 0) {
  						numMoved+=opts.scrollAmount;
  						if(numMoved>scrollSize*opts.loop){
  							_scrollObj[_dir] = 0;
  							return clearInterval(marqueeId);
  						} 
  					}
  					var newPos = _scrollObj[_dir]+(opts.direction == 'left' || opts.direction == 'up'?1:-1)*opts.scrollAmount;
  				}else{
  					if(opts.duration){
  						if(t++<d){
  							isMove = true;
  							var newPos = Math.ceil(easeOutQuad(t,b,c,d));
  							if(t==d){
  								newPos = e;
  							}
  						}else{
  							newPos = e;
  							clearInterval(scrollId);
  							isMove = false;
  							return;
  						}
  					}else{
  						var newPos = e;
  						clearInterval(scrollId);
  					}
  				}
  				
  				if(opts.direction == 'left' || opts.direction == 'up'){
  					if(newPos>=scrollSize){
  						newPos-=scrollSize;
  					}
  				}else{
  					if(newPos<=0){
  						newPos+=scrollSize;
  					}
  				}
  				_scrollObj[_dir] = newPos;
  				
  				if(opts.isMarquee){
  					if(marqueeId) clearTimeout(marqueeId);
  					marqueeId = setTimeout(scrollFunc, opts.scrollDelay);
  				}else if(t<d){
  					if(scrollId) clearTimeout(scrollId);
  					scrollId = setTimeout(scrollFunc, opts.scrollDelay);
  				}else{
  					isMove = false;
  				}
  				
  			};
  			
  			function rollFunc(pPos){
  				isMove = true;
  				var _dir = (opts.direction == 'left' || opts.direction == 'right') ? 'scrollLeft':'scrollTop';
  				var _neg = opts.direction == 'left' || opts.direction == 'up'?1:-1;
  
  				numRoll = numRoll +_neg;
  				//得到当前所看元素序号并改变导航CSS
  				if(pPos == undefined&&opts.navId){
  					$navBtns.eq(numView).removeClass('navOn');
  					numView +=_neg;
  					if(numView>=_len){
  						numView = 0;
  					}else if(numView<0){
  						numView = _len-1;
  					}
  					$navBtns.eq(numView).addClass('navOn');
  					numRoll = numView;
  				}
  
  				var _temp = numRoll<0?scrollSize:0;
  				t=0;
  				b=_scrollObj[_dir];
  				//c=(pPos != undefined)?pPos:_neg*opts.distance;
  				e=(pPos != undefined)?pPos:_temp+(opts.distance*numRoll)%scrollSize;
  				if(_neg==1){
  					if(e>b){
  						c = e-b;
  					}else{
  						c = e+scrollSize -b;
  					}
  				}else{
  					if(e>b){
  						c =e-scrollSize-b;
  					}else{
  						c = e-b;
  					}
  				}
  				d=opts.duration;
  				
  				//scrollId = setInterval(scrollFunc, opts.scrollDelay);
  				if(scrollId) clearTimeout(scrollId);
  				scrollId = setTimeout(scrollFunc, opts.scrollDelay);
  			}
  			
  			function start(){
  				if(rollId) clearTimeout(rollId);
  				rollId = setInterval(function(){
  					rollFunc();
  				}, opts.time*1000);
  			}
  			function stop(){
  				clearInterval(rollId);
  			}
  			
  			function easeOutQuad(t,b,c,d){
  				return -c *(t/=d)*(t-2) + b;
  			}
  			
  			function easeOutQuint(t,b,c,d){
  				return c*((t=t/d-1)*t*t*t*t + 1) + b;
  			}
  
  		});
  	};
  	$.fn.kxbdSuperMarquee.defaults = {
  		isMarquee:false,//是否为Marquee
  		isEqual:true,//所有滚动的元素长宽是否相等,true,false
  		loop: 0,//循环滚动次数，0时无限
  		newAmount:3,//加速滚动的步长
  		eventA:'mousedown',//鼠标事件，加速
  		eventB:'mouseup',//鼠标事件，原速
  		isAuto:true,//是否自动轮换
  		time:5,//停顿时间，单位为秒
  		duration:50,//缓动效果，单次移动时间，越小速度越快，为0时无缓动效果
  		eventGo:'click', //鼠标事件，向前向后走
  		direction: 'left',//滚动方向，'left','right','up','down'
  		scrollAmount:1,//步长
  		scrollDelay:10,//时长
  		eventNav:'click'//导航事件
  	};
  	
  	$.fn.kxbdSuperMarquee.setDefaults = function(settings) {
  		$.extend( $.fn.kxbdSuperMarquee.defaults, settings );
  	};
  	
  })(jQuery);
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  