$.fn.adfocus = function (options) {
  var opts={
   drection: "",
   //控制方向，分为向上滚，向左滚 ,和渐变效果，填left为左滚动，填up向上滚动，filter为渐变效果，当pull为true的时候，pull_right为右，pull_left为左，pull_top为上，pull_bottom为下。
   numbox: "",
   //轮换数字的层的class名或者ID名 要加" . "或者" # "
   imgbox: "",
   //轮换图的层，放入图片的层，填class名或者id名 要加" . "或者" # "
   text:"",
   //文字层
   speed: "",
   //速度控制
   addClass: "", 
   //轮换数字层里的li标签class样式替换,切忌此处不要加上 " . ",直接填class名
   imgboxWidth:"",
   //宽度
   imgboxHeight:"",
   //高度
   imgLen:"",
   //图片数量
   pull:"",
   //拉动效果开启变量 
   usevent:""
  }
  $.extend(opts, options);
    return this.each(function () {

      var adTimer = null;
      var _this = $(this);
      var index = 0; 
      var oNumList =_this.find(opts.numbox).children();
      var txList =_this.find(opts.text).children();
      var len = opts.imgLen;
      var imgListBox = _this.find(opts.imgbox);
      var imglistWidth =  opts.imgboxWidth;
      var imglistHeight = opts.imgboxHeight;
      var imglistBoxChid=imgListBox.children();

      timer();
      if(opts.pull=="true"){
       imglistBoxChid.not("script").css({
       "position":"absolute",
       "z-index":1}).first().css({"z-index":2})
      }

      oNumList.bind(opts.usevent,function(){
        index = oNumList.index(this);
        action(index);
      }).eq(0).trigger("mouseleave");

      _this.hover(function () {
        clearInterval(adTimer);
      }, function () {timer();
           
    })
    //以下是控制滑动的方法
    function timer(){
     adTimer = setInterval(function () {
      action(index)
      index++;
      if (index == len) {
       index = 0;
      }
     }, opts.speed)
    }
        function action(index) {
			//alert(1);
            if (opts.drection == "left") {         //像左移动
			   imgListBox.width(imglistWidth*len);
                imglistBoxChid.css({
                    float: "left"
                });
                imgListBox.stop().animate({
                    left: -imglistWidth * index
                }, 1000);
            } else if(opts.drection == "up") {             //像上移动  
			 // alert(1);
                imgListBox.stop().animate({
                    top: -imglistHeight * index
                }, 1000);
            }else if(opts.drection == "filter"){   //渐变效果 
			     _this.css({"position":"relative"})
				imglistBoxChid.eq(index).css({"position":"absolute",
										   "left":"0px",
										   "top":"0px" }).stop()
				                   .animate({opacity:1},500)
								   .css({"z-index": "1"})
								   .siblings().stop().animate({opacity:0},500)
								   .css({"z-index": "0"});
			}else if(opts.pull=="true"){
				var pull_drection = {}
				var pull_drection2 = {}
			    if(opts.drection == "pull_right"){
					key="left";
					pull_drection[key]="0";
					pull_drection2[key]=-opts.imgboxWidth;
					pull(pull_drection,pull_drection2);
					}
				else if(opts.drection == "pull_left"){
					key="left";
					pull_drection[key]="0";
					pull_drection2[key]= opts.imgboxWidth;
					pull(pull_drection,pull_drection2);
					}
			   else if(opts.drection == "pull_top"){
					key="top";
					pull_drection[key]="0";
					pull_drection2[key]=-opts.imgboxHeight;
					pull(pull_drection,pull_drection2);
					}
			   else if(opts.drection == "pull_bottom"){
					key="top";
					pull_drection[key]="0";
					pull_drection2[key]=opts.imgboxHeight;
					pull(pull_drection,pull_drection2);
					}
				
				
				}

			txList.eq(index).stop().animate({"top":0},500).siblings().stop().animate({"top":-30},0);//文字
            oNumList.removeClass(opts.addClass).eq(index).addClass(opts.addClass);
			function pull(pull_drection,pull_drection2){
						imglistBoxChid.not("script").eq(index)
					                            .css({ "z-index": 3 })
												.siblings().css({ "z-index": 1 });	
						imgListBox.children().not("script").eq(index).stop()
					                                   .animate( pull_drection,500)
													   .siblings().stop().animate(pull_drection2,500).css({"z-index": 1})
						
					}//pull()
        }
		
		
		
    });
};