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
//UI&UE Dept. mengjia
//080623


////////
function ScrollPic(scrollContId,arrLeftId,arrRightId,dotListId){
	this.scrollContId=scrollContId;//一系列的初始化
	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=5;
	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);
	
	////初始化函数start
	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()"));
		
		////初始化左侧按钮
		if(this.arrLeftId){
			this.arrLeftObj=sina.$(this.arrLeftId);
			if(this.arrLeftObj){
				sina.addEvent(this.arrLeftObj,"mousedown",Function("ScrollPic.childs["+this.ID+"].rightMouseDown()"));
				sina.addEvent(this.arrLeftObj,"mouseup",Function("ScrollPic.childs["+this.ID+"].rightEnd()"));
				sina.addEvent(this.arrLeftObj,"mouseout",Function("ScrollPic.childs["+this.ID+"].rightEnd()"))
			}
		};
		///初始化右侧按钮
		if(this.arrRightId){
			this.arrRightObj=sina.$(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()"))
			}
		};
		///此处功能已经遗失
		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+")"))
				}
			}
		};
		
		///自动滚动
		if(this.autoPlay){
			this.play()
		}
	};
	///初始化函数end
	
	
	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
			}
		}
	}
};