var waimai = { 
$: 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;
    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);
    this.initialize = function() {
        if (!this.scrollContId) {
            throw new Error("必须指定scrollContId.");
            return;
        };
        this.scrollContDiv = waimai.$(this.scrollContId);
        if (!this.scrollContDiv) {
            throw new Error("scrollContId不是正确的对象.(scrollContId = \"" + this.scrollContId + "\")");
            return;
        };
        this.scrollContDiv.style.width = this.frameWidth + "px";
        this.scrollContDiv.style.overflow = "hidden";
        this.listDiv01.innerHTML = this.listDiv02.innerHTML = this.scrollContDiv.innerHTML;
        this.scrollContDiv.innerHTML = "";
        this.scrollContDiv.appendChild(this.stripDiv);
        this.stripDiv.appendChild(this.listDiv01);
        this.stripDiv.appendChild(this.listDiv02);
        this.stripDiv.style.overflow = "hidden";
        this.stripDiv.style.zoom = "1";
        this.stripDiv.style.width = "32766px";
        this.listDiv01.style.cssFloat = "left";
        this.listDiv02.style.cssFloat = "left";
        waimai.addEvent(this.scrollContDiv, "mouseover", Function("ScrollPic.childs[" + this.ID + "].stop()"));
        waimai.addEvent(this.scrollContDiv, "mouseout", Function("ScrollPic.childs[" + this.ID + "].play()"));
        if (this.arrLeftId) {
            this.arrLeftObj = waimai.$(this.arrLeftId);
            if (this.arrLeftObj) {
                waimai.addEvent(this.arrLeftObj, "mousedown", Function("ScrollPic.childs[" + this.ID + "].rightMouseDown()"));
                waimai.addEvent(this.arrLeftObj, "mouseup", Function("ScrollPic.childs[" + this.ID + "].rightEnd()"));
                waimai.addEvent(this.arrLeftObj, "mouseout", Function("ScrollPic.childs[" + this.ID + "].rightEnd()"))
            }
        };
        if (this.arrRightId) {
            this.arrRightObj = waimai.$(this.arrRightId);
            if (this.arrRightObj) {
                waimai.addEvent(this.arrRightObj, "mousedown", Function("ScrollPic.childs[" + this.ID + "].leftMouseDown()"));
                waimai.addEvent(this.arrRightObj, "mouseup", Function("ScrollPic.childs[" + this.ID + "].leftEnd()"));
                waimai.addEvent(this.arrRightObj, "mouseout", Function("ScrollPic.childs[" + this.ID + "].leftEnd()"))
            }
        };
        if (this.dotListId) {
            this.dotListObj = waimai.$(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";
                    waimai.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;
            }
        }
    }
};