var sina={
$:function(objName)
{
    if(document.getElementById)
    { return eval('document.getElementById("'+objName+'")')}
    else{ return eval('document.all.'+objName)}
},
isIE:navigator.appVersion.indexOf("MSIE")!=-1?true:false,
addEvent:function(l,i,I)
{
    if(l.attachEvent)
    {l.attachEvent("on"+i,I)}
    else
    {l.addEventListener(i,I,false)}
},
delEvent:function(l,i,I)
{
    if(l.detachEvent)
    {l.detachEvent("on"+i,I)}
    else
    {l.removeEventListener(i,I,false)}
},
readCookie:function(O)
{
    var o="",l=O+"=";
    if(document.cookie.length>0)
    {
        var i=document.cookie.indexOf(l);
        if(i!=-1)
        {
            i+=l.length;
            var I=document.cookie.indexOf(";",i);
            if(I==-1)
                I=document.cookie.length;
                o=unescape(document.cookie.substring(i,I))
         }
     };
     return o
},
writeCookie:function(i,l,o,c)
{
    var O="",I="";
    if(o!=null)
    {
        O=new Date((new Date).getTime()+o*3600000);
        O=";expires="+O.toGMTString()
     };
     if(c!=null)
     {
        I=";domain="+c
      };
      document.cookie=i+"="+escape(l)+O+I
 },
 readStyle:function(I,l)
 {
    if(I.style[l])
    {
        return I.style[l]
    }
    else if(I.currentStyle)
    {
        return I.currentStyle[l]
    }
    else if(document.defaultView&&document.defaultView.getComputedStyle)
    {
        var i=document.defaultView.getComputedStyle(I,null);
        return i.getPropertyValue(l)}else{return null
     }
 }
};

//滚动图片构造函数
function ScrollPic(scrollContId,arrLeftId,arrRightId,dotListId)
{
    this.scrollContId=scrollContId;
    this.arrLeftId=arrLeftId;
    this.arrRightId=arrRightId;
    this.dotListId=dotListId;
    this.dotClassName="dotItem";
    this.dotOnClassName="dotItemOn";
    this.dotObjArr=[];
    this.pageWidth=0;
    this.frameWidth=0;
    this.speed=10;
    this.space=10;
    this.pageIndex=0;
    this.autoPlay=true;
    this.autoPlayTime=3;
    var _autoTimeObj,_scrollTimeObj,_state="ready";
    this.stripDiv=document.createElement("DIV");
    this.listDiv01=document.createElement("DIV");
    this.listDiv02=document.createElement("DIV");
    if(!ScrollPic.childs){ScrollPic.childs=[]};
    this.ID=ScrollPic.childs.length;ScrollPic.childs.push(this);
    this.initialize=function()
    {
        if(!this.scrollContId)
        {
            throw new Error("必须指定 scrollContId.");
            return
        };
        this.scrollContDiv=sina.$(this.scrollContId);
        if(!this.scrollContDiv)
        {
            throw new Error("scrollContId不是正确的对象.(scrollContId = \""+this.scrollContId+"\")");
            return
         };
         this.scrollContDiv.style.width=this.frameWidth+"px";
         this.scrollContDiv.style.overflow="hidden";
         this.listDiv01.innerHTML=this.listDiv02.innerHTML=this.scrollContDiv.innerHTML;
         this.scrollContDiv.innerHTML="";
         this.scrollContDiv.appendChild(this.stripDiv);
         this.stripDiv.appendChild(this.listDiv01);
         this.stripDiv.appendChild(this.listDiv02);
         this.stripDiv.style.overflow="hidden";
         this.stripDiv.style.zoom="1";
         this.stripDiv.style.width="32766px";
         this.listDiv01.style.cssFloat="left";
         this.listDiv02.style.cssFloat="left";
         sina.addEvent(this.scrollContDiv,"mouseover",Function("ScrollPic.childs["+this.ID+"].stop()"));
         sina.addEvent(this.scrollContDiv,"mouseout",Function("ScrollPic.childs["+this.ID+"].play()"));
         if(this.arrLeftId)
         {
            this.arrLeftObj=sina.$(this.arrLeftId);
            if(this.arrLeftObj)
            {
                sina.addEvent(this.arrLeftObj,"mousedown",Function("ScrollPic.childs["+this.ID+"].rightMouseDown()"));
                sina.addEvent(this.arrLeftObj,"mouseup",Function("ScrollPic.childs["+this.ID+"].rightEnd()"));
                sina.addEvent(this.arrLeftObj,"mouseout",Function("ScrollPic.childs["+this.ID+"].rightEnd()"))
             }
          };
          if(this.arrRightId)
          {
              this.arrRightObj=sina.$(this.arrRightId);
              if(this.arrRightObj)
              {
                sina.addEvent(this.arrRightObj,"mousedown",Function("ScrollPic.childs["+this.ID+"].leftMouseDown()"));
                sina.addEvent(this.arrRightObj,"mouseup",Function("ScrollPic.childs["+this.ID+"].leftEnd()"));
                sina.addEvent(this.arrRightObj,"mouseout",Function("ScrollPic.childs["+this.ID+"].leftEnd()"))
               }
           };
           if(this.dotListId)
           {
                this.dotListObj=sina.$(this.dotListId);
                if(this.dotListObj)
                {
                    var pages=Math.round(this.listDiv01.offsetWidth/this.frameWidth+0.4),i,tempObj;
                     for(i=0;i<pages;i++)
                     {
                        tempObj=document.createElement("span");
                        this.dotListObj.appendChild(tempObj);
                        this.dotObjArr.push(tempObj);
                        if(i==this.pageIndex) 
                        {
                            tempObj.className=this.dotClassName
                         }
                         else
                         {
                            tempObj.className=this.dotOnClassName};
                            tempObj.title="第"+(i+1)+"页";
                            sina.addEvent(tempObj,"click",Function("ScrollPic.childs["+this.ID+"].pageTo("+i+")"))
                          }
                      }
                  };
                  if(this.autoPlay)
                  {
                    this.play()
                   }
              };
              this.leftMouseDown=function()
              {
                    if(_state!="ready"){return};
                    _state="floating";
                    _scrollTimeObj=setInterval("ScrollPic.childs["+this.ID+"].moveLeft()",this.speed)};
                    this.rightMouseDown=function()
                    {
                        if(_state!="ready"){return};
                        _state="floating";
                        _scrollTimeObj=setInterval("ScrollPic.childs["+this.ID+"].moveRight()",this.speed)};
                        this.moveLeft=function()
                        {
                            if(this.scrollContDiv.scrollLeft+this.space>=this.listDiv01.scrollWidth)
                            {
                                this.scrollContDiv.scrollLeft=this.scrollContDiv.scrollLeft+this.space-this.listDiv01.scrollWidth
                             }
                             else
                             {  
                                this.scrollContDiv.scrollLeft+=this.space};this.accountPageIndex()
                             };
                             this.moveRight=function()
                             {
                                if(this.scrollContDiv.scrollLeft-this.space<=0)
                                {
                                    this.scrollContDiv.scrollLeft=this.listDiv01.scrollWidth+this.scrollContDiv.scrollLeft-this.space
                                 }
                                 else
                                 {
                                    this.scrollContDiv.scrollLeft-=this.space
                                  };
                                  this.accountPageIndex()
                                  };
                                  this.leftEnd=function()
                                  {
                                    if(_state!="floating"){return};
                                    _state="stoping";clearInterval(_scrollTimeObj);
                                    var fill=this.pageWidth-this.scrollContDiv.scrollLeft%this.pageWidth;
                                    this.move(fill)};this.rightEnd=function()
                                    {
                                        if(_state!="floating"){return};
                                        _state="stoping";clearInterval(_scrollTimeObj);
                                        var fill=-this.scrollContDiv.scrollLeft%this.pageWidth;this.move(fill)
                                     };
                                     this.move=function(num,quick)
                                     {
                                        var thisMove=num/5;
                                        if(!quick)
                                        {
                                            if(thisMove>this.space)
                                            {
                                                thisMove=this.space};
                                                if(thisMove<-this.space)
                                                {
                                                    thisMove=-this.space
                                                 }
                                            };
                                              if(Math.abs(thisMove)<1&&thisMove!=0)
                                              {
                                                thisMove=thisMove>=0?1:-1
                                               }
                                               else
                                               {
                                                    thisMove=Math.round(thisMove)
                                                };
                                                var temp=this.scrollContDiv.scrollLeft+thisMove;
                                                if(thisMove>0)
                                                {
                                                    if(this.scrollContDiv.scrollLeft+thisMove>=this.listDiv01.scrollWidth)
                                                    {
                                                        this.scrollContDiv.scrollLeft=this.scrollContDiv.scrollLeft+thisMove-this.listDiv01.scrollWidth
                                                     }
                                                     else
                                                     {
                                                        this.scrollContDiv.scrollLeft+=thisMove
                                                      }
                                                  }
                                                  else
                                                  {
                                                        if(this.scrollContDiv.scrollLeft-thisMove<=0)
                                                        {
                                                             this.scrollContDiv.scrollLeft=this.listDiv01.scrollWidth+this.scrollContDiv.scrollLeft-thisMove
                                                         }
                                                         else
                                                         {
                                                            this.scrollContDiv.scrollLeft+=thisMove
                                                          }
                                                   };
                                                   num-=thisMove;
                                                   if(Math.abs(num)==0)
                                                   {
                                                        _state="ready";
                                                        if(this.autoPlay){this.play()};
                                                        this.accountPageIndex();
                                                        return
                                                     }
                                                     else
                                                     {
                                                        this.accountPageIndex();
                                                        setTimeout("ScrollPic.childs["+this.ID+"].move("+num+","+quick+")",this.speed)
                                                      }
                                             };
                                             this.next=function()
                                             {
                                                if(_state!="ready"){return};
                                                _state="stoping";
                                                this.move(this.pageWidth,true)
                                             };
                                             this.play=function()
                                             {
                                                if(!this.autoPlay){return};
                                                clearInterval(_autoTimeObj);
                                                _autoTimeObj=setInterval("ScrollPic.childs["+this.ID+"].next()",this.autoPlayTime*1000)
                                             };
                                             this.stop=function()
                                             {clearInterval(_autoTimeObj)};
                                             this.pageTo=function(num){if(_state!="ready"){return};_state="stoping";var fill=num*this.frameWidth-this.scrollContDiv.scrollLeft;this.move(fill,true)};this.accountPageIndex=function(){this.pageIndex=Math.round(this.scrollContDiv.scrollLeft/this.frameWidth);if(this.pageIndex>Math.round(this.listDiv01.offsetWidth/this.frameWidth+0.4)-1){this.pageIndex=0};var i;for(i=0;i<this.dotObjArr.length;i++){if(i==this.pageIndex){this.dotObjArr[i].className=this.dotClassName}else{this.dotObjArr[i].className=this.dotOnClassName}}}};