function FocusImg(bigDiv,smallDiv,titleDiv,imgW,imgH,imgList,sTime,introDiv)
				{
					var $=function (obj){return document.getElementById(obj);}
					this.bigDiv=bigDiv;this.smallDiv=smallDiv,this.imgW=imgW;this.imgH=imgH;
					this.imgList=[];
					this.sTime=sTime;
					this.titleDiv=titleDiv;
					this.introDiv=introDiv;
					var scrollDiv;
					var smallImgList=[];
					var imgHeight,_bigDiv;
					var timer,autoTimer;
					var ctitle;
					var t=this;
					var cintro;
					this.curId=0;
					var smallPicArr=[];
					var mypic=document.createElement("img");
					var mypicLink=document.createElement("a");
					this.init=function()//初始化
					{						
						mypic.width=this.imgW;
						mypic.height=this.imgH;
						imgHeight=this.imgH;
						_bigDiv=this.bigDiv;
						_titleDiv=this.titleDiv;
						_introDiv=this.introDiv;
						_imgList=this.imgList;
						scrollDiv=document.createElement("div");
						mypicLink.target="_blank";
						mypicLink.appendChild(mypic);
						scrollDiv.appendChild(mypicLink);

						for ( var i = 0; i < this.imgList.length ; i++ )
						{

							//创建小图区域
							var slspan=document.createElement("div");
							slspan.className="small_div";
							var slimglink=document.createElement("a");
							slimglink.target="_blank";
							slimglink.href=this.imgList[i].url;
							var slimg=document.createElement("img");
							slimg.src=this.imgList[i].bigimg;
							slimglink.appendChild(slimg);
							slimglink.innerHTML += this.imgList[i].intro;
							slspan.appendChild(slimglink);
							smallPicArr.push(slspan);
							(function(){
								var itemid=i;				
								slspan.onmouseover=function()
								{
									t.doPic(itemid);
									t.curId=itemid;
									clearInterval(autoTimer);
									t.autoPlay();
								}

							})();
							$(this.smallDiv).appendChild(slspan);

						}
						$(this.bigDiv).style.width=this.imgW+"px";
						$(this.bigDiv).style.height=this.imgH+"px";
						$(this.bigDiv).style.overflow="hidden";
						$(this.bigDiv).appendChild(scrollDiv);
						this.doPic(0);

					};
					this.doPic=function(id)
					{		
						try{clearTimeout(timer)}catch(e){};
						$(this.titleDiv).innerHTML=this.imgList[id].title;
						if ($(this.introDiv) && this.imgList[id].intro)
							$(this.introDiv).innerHTML=this.imgList[id].intro ;
						else if($(this.introDiv) || (!this.imgList[id].intro))
							$(this.introDiv).innerHTML="";
						//animate($(this.bigDiv).scrollTop,id * imgHeight);
						mypicLink.href=this.imgList[id].url;
						if (document.all)
						{
							mypic.filters.revealTrans.Transition=23;
							mypic.filters.revealTrans.apply();
							mypic.filters.revealTrans.play();
						}
						mypic.src=this.imgList[id].bigimg;
						//小图区域特效
						for (i = 0; i < smallPicArr.length ; i++ )
						{
							smallPicArr[i].className = smallPicArr[i].className.replace("selected" , "");
						}
						smallPicArr[id].className += " selected";
					}
					this.autoPlay=function()
					{
						autoTimer=setInterval(function(){
							t.curId++;
							if (t.curId >= t.imgList.length)
							  t.curId = 0 ;
							t.doPic(t.curId);
						},this.sTime);
					}
					function callback(v)
					{
						$(_bigDiv).scrollTop = v;
					}
					function animate(beginV,endV)
					{
						x = endV - beginV;
						beginV += (x/4);
						if (Math.abs(beginV-endV) <= 1)
						{
							beginV = endV ;
							callback(endV);
						}
						else
						{			
							callback(beginV);
							timer=setTimeout(function(){animate( beginV  , endV)},10);
						}
					}
				}