function $obj(id) {
    return document.getElementById(id);
}

function getposOffset(what, offsettype) {
    var totaloffset = (offsettype == "left") ? what.offsetLeft : what.offsetTop;
    var parentEl = what.offsetParent;
    while (parentEl != null) {
        totaloffset = (offsettype == "left") ? totaloffset + parentEl.offsetLeft : totaloffset + parentEl.offsetTop;
        parentEl = parentEl.offsetParent;
    }
    return totaloffset;
}

//ff支持s
function isIE() {
    return !!(window.attachEvent && !window.opera);
}


if (!isIE()) { //firefox innerText define
    HTMLElement.prototype.__defineGetter__("innerText",
    function() {
        var anyString = "";
        var childS = this.childNodes;
        for (var i = 0; i < childS.length; i++) {
            if (childS[i].nodeType == 1)
                anyString += childS[i].tagName == "BR" ? '\n' : childS[i].innerText;
            else if (childS[i].nodeType == 3)
                anyString += childS[i].nodeValue;
        }
        return anyString;
    }
   );
    HTMLElement.prototype.__defineSetter__("innerText",
    function(sText) {
        this.textContent = sText;
    }
   );
}






//滚动提示
var Sroll = {
    scrollInfo: [],
    isStoped: false,
    oScroll: [],
    preTop: 0,
    curTop: 0,
    stopTime: 0,
    oScrollMsg: [],
    si: [],
    init: function() {
        try {
            Sroll.oScroll = $obj("scrollWrap");
            Sroll.oScrollMsg = $obj("scrollMsg");

            for (var i = 0; i < Sroll.scrollInfo.length; i++) {
                Sroll.oScrollMsg.innerHTML += " <a href=\"" + Sroll.scrollInfo[i][1] + "\" target= \"_blank\">" + Sroll.scrollInfo[i][0] + "<span class=\"pot\"></span></a><br />";
            }
            with (Sroll.oScroll) { noWrap = true; }
            Sroll.oScroll.onmouseover = new Function('Sroll.isStoped = true');
            Sroll.oScroll.onmouseout = new Function('Sroll.isStoped = false');

            Sroll.si = setInterval('clearInterval(Sroll.si);Sroll.init_srolltext(); ', 2500);
        }
        catch (e) { }
    },
    init_srolltext: function() {
        Sroll.oScroll.scrollTop = 0;
        setInterval('Sroll.scrollUp()', 15);
    },

    scrollUp: function() {
        if (Sroll.isStoped) return;
        Sroll.curTop += 1;
        if (Sroll.curTop == 16) {
            Sroll.stopTime += 1;
            Sroll.curTop -= 1;
            if (Sroll.stopTime == 180) {
                Sroll.curTop = 0;
                Sroll.stopTime = 0;
            }
        }
        else {
            Sroll.preTop = Sroll.oScroll.scrollTop;
            Sroll.oScroll.scrollTop += 1;
            if (Sroll.preTop == Sroll.oScroll.scrollTop) {
                Sroll.oScroll.scrollTop = 0;
                Sroll.curTop = 15;
            }
        }
    }
};


//左菜单关于详细分类div 2008-10-16

//左菜单关于详细分类div 2008-10-16
//ff支持s
function $obj(id) {
    return document.getElementById(id);
}

function isIE() {
    return !!(window.attachEvent && !window.opera);
}

function getposOffset(what, offsettype) {
    var totaloffset = (offsettype == "left") ? what.offsetLeft : what.offsetTop;
    var parentEl = what.offsetParent;
    while (parentEl != null) {
        totaloffset = (offsettype == "left") ? totaloffset + parentEl.offsetLeft : totaloffset + parentEl.offsetTop;
        parentEl = parentEl.offsetParent;
    }
    return totaloffset;
}

var sortArray;
var sortId = -1;
function showwindowExtra(obj, objdiv, addx, addy, ids) {
    if (sortArray[ids].length > 0) {
        $obj("sortTitle").innerHTML = obj.innerHTML;
        $obj("sortTitle").href = obj;
        if (sortArray[ids].length == 0) {
            sortId = -1;
            $obj("sortContentBox").style.display = "none";
        }
        else {
            sortId = ids;
            $obj("sortContentBox").style.display = "inline";
            $obj("sortContent" + sortId).style.display = "";
        }
        var x = getposOffset(obj, 'left');
        var y = getposOffset(obj, 'top');
        var div_obj = $obj(objdiv);
        div_obj.style.left = (x + addx) + 'px';
        div_obj.style.top = (y + addy) + 'px';
        div_obj.style.display = "inline";

    }
}

function hidewindowExtra(objdiv, ids) {
    var div_obj = $obj(objdiv);
    var ul_obj = $obj("sortContent" + ids);
    if (div_obj) div_obj.style.display = "none";
    if (ul_obj) ul_obj.style.display = "none";
}

function showwindowExtra2() {
    if (sortId != -1) $obj("sortContent" + sortId).style.display = "";
    $obj('sortBox').style.display = 'inline';
}

function hidewindowExtra2() {
    if (sortId != -1) $obj("sortContent" + sortId).style.display = "none";
    $obj('sortBox').style.display = 'none';
}

function loadOver() {
    $obj("SortBoxShadowLeft").style.height = "2px";
    $obj("SortBoxShadowLeft").style.position = "static";
}

var book = 'http://book.dangdang.com/';
var list = 'http://list.book.dangdang.com/';
var categroy = 'http://category.dangdang.com/';
var stat = 'http://static.dangdang.com/';
function initSort() {
    sortArray = [
    [
    "游戏", categroy + "game",
  "软件", categroy + "software",
  "教育音像", categroy + "education"
    ]
    ];
    initSortCreate();
}

function initSortCreate() {
    var tempString = "";
    for (var i = 0; i < sortArray.length; i++) {
        tempString += "<ul id=\"sortContent" + i + "\">";
        for (var j = 0; j < sortArray[i].length; j++) {
            if (j >= sortArray[i].length - 2) {
                tempString += "<li class=\"li_2\"><a href=\"" + sortArray[i][j + 1] + "\">" + sortArray[i][j] + "</a></li>";
            }
            else {
                tempString += "<li><a href=\"" + sortArray[i][j + 1] + "\">" + sortArray[i][j] + "</a></li>";
            }

            j++;
        }
        tempString += "</ul>";
    }
    document.write(tempString);
}

var start = ["<img src='images/icon_star_gray.gif'/>", "<img src='images/icon_star_harf.gif'/>", "<img src='images/icon_star_red.gif'/>"];
var starts = [2, 0, 0, 0, 0, 2, 1, 0, 0, 0, 2, 2, 0, 0, 0, 2, 2, 1, 0, 0, 2, 2, 2, 0, 0, 2, 2, 2, 1, 0, 2, 2, 2, 2, 0, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2];
function getStarsHtml(o) {
    var s = [], i;
    for (i = 0; i < 5; i++) s.push(start[starts[(o - 1) * 10 + i]]);
    return s.join('');
}



//关于分类搜索
function gotosearch() {
    var objfrm = document.searchform;
    if (objfrm.catalog.value >= 4000000) {
        window.location = categroy + "search?q=" + objfrm.key.value + "&guan=" + objfrm.catalog.value;
        return false;
    }

    if (objfrm.catalog.value == "01") {
        objfrm.action = "http://search.book.dangdang.com/search.aspx";
    }
    if (objfrm.catalog.value == "03") {
        objfrm.action = "http://search.music.dangdang.com/search.aspx";
    }
    if (objfrm.catalog.value == "05") {
        objfrm.action = "http://search.movie.dangdang.com/search.aspx";
    }
    return true;
}




///addfavorite
function addBookmark(title, url) {
    if (window.sidebar) {
        window.sidebar.addPanel(title, url, "");
    }
    else if (document.all) {
        window.external.AddFavorite(url, title);
    }
    else if (window.opera && window.print) {
        return true;
    }
}



//首页幻灯
var Lantern = {

    onChange: [],
    oInterval: [],
    otimeOut: [],
    opacityNum: 101,
    cycNum: 0,
    showNum: 0,
    width: 519, //整体宽度
    navyCtr: [], //2维:  0.原长 1.目标长 2.speed 
    navyTime: 10, //navy动画时间
    picMoveSpeed: 22, //图片移动速度
    timeOut_time: 7000, //停滞时间
    info: //0.图片url 1.名称 2.链接地址 
    [],

    init: function() {
        Lantern.onChange = false;
        for (var i = 0; i < Lantern.info.length; i++) {
            var picDiv;
            var picTemp;
            picDiv = document.createElement('div');
            picTemp = document.createElement('img');
            picDiv.id = "LanternImg" + i;
            picDiv.name = i;
            picTemp.src = Lantern.info[i][0];
            //picTemp.style.width = "519px";
            picTemp.style.height = "354px";
            picDiv.style.position = "absolute";
            picDiv.style.left = "519px";
            picDiv.onclick = function() { window.open(Lantern.info[this.name][2]); };
            picDiv.appendChild(picTemp);
            document.getElementById("lanternImg").appendChild(picDiv);
            var divTemp;
            divTemp = document.createElement('div');
            divTemp.id = "LanternN" + i;
            divTemp.style.width = "275px";
            divTemp.name = i;
            divTemp.innerHTML = "<div class='liclass' id='lanternnum" + i + "'>" + (i + 1) + "</div><span id=\"__lanternNc" + i + "\" style=\"display:none\">&nbsp;<b>" + (i + 1) + "</b>." + Lantern.info[i][1] + "</span>";
            if (i == 0) {
                divTemp.className = "div_off1";
            }
            else if (i == Lantern.info.length - 1) {
                divTemp.className = "div_off3";
            }
            else {
                divTemp.className = "div_off2";
            }
            //divTemp.className="div_off";
            if (i == 0)
                divTemp.onclick = function() { window.open(Lantern.info[this.name][2]); };
            else
                divTemp.onclick = function() { if (!Lantern.onChange) { Lantern.onChange = true; Lantern.setNavy(this.name); } };
            document.getElementById("lanternNavy").appendChild(divTemp);
        }

        Lantern.initNany();
    },

    initNany: function() {
        navyCtr = new Array();
        for (var k = 0; k < Lantern.info.length; k++)
            Lantern.navyCtr[k] = [];
        document.getElementById("__lanternNc0").style.display = "";
        document.getElementById("lanternnum0").style.display = "none";
        document.getElementById("LanternN0").className = "div_on1";
        var onLength, offLength;
        onLength = 275;//;document.getElementById("LanternN0").offsetWidth;
        offLength = 27.75; //(Lantern.width-onLength)/(Lantern.info.length-1)
        var numtemp = 0;
        for (var j = 0; j < Lantern.info.length; j++) {
            if (j != 0)//未选
            {
                Lantern.navyCtr[j][1] = offLength;
                document.getElementById("__lanternNc" + j).style.display = "none";
                if (j == Lantern.info.length - 1) {
                    document.getElementById("LanternN" + j).className = "div_off3";
                }
                else {
                    document.getElementById("LanternN" + j).className = "div_off2";
                }
                document.getElementById("LanternN" + j).style.width = offLength + "px";
                if (j == Lantern.info.length - 1) {
                    document.getElementById("LanternN" + j).style.width = (Lantern.width - onLength - numtemp - 7) + "px";
                }
                else {
                    numtemp += offLength;
                }
            }
            else//已选
            {
                Lantern.navyCtr[j][1] = onLength;
            }
        }


        document.getElementById("LanternImg0").style.display = "";
        document.getElementById("LanternImg0").style.left = "0px";
        Lantern.otimeOut = setTimeout("Lantern.cycLantern()", Lantern.timeOut_time);
    },

    setNavy: function(i) {
        if (i == Lantern.info.length - 1)
            document.getElementById("lanternNavy").style.backgroundColor = "#F5F4F2";
        else
            document.getElementById("lanternNavy").style.backgroundColor = "#CCCABE";

        document.getElementById("__lanternNc" + i).style.display = "";
        document.getElementById("lanternnum" + i).style.display = "none";
        if (i == 0) {
            document.getElementById("LanternN" + i).className = "div_on1";
        }
        else if (i == Lantern.info.length - 1) {
            document.getElementById("LanternN" + i).className = "div_on3";
        }
        else {
            document.getElementById("LanternN" + i).className = "div_on2";
        }
        document.getElementById("LanternN" + i).style.width = null;
        var onLength, offLength;
        onLength = 275; //document.getElementById("LanternN"+i).offsetWidth
        offLength = 27.75; //(Lantern.width-onLength)/(Lantern.info.length-1)
        var numtemp = 0;
        for (var j = 0; j < Lantern.info.length; j++) {
            Lantern.navyCtr[j][0] = Lantern.navyCtr[j][1];
            if (i != j)//未选
            {
                Lantern.navyCtr[j][1] = offLength;
                document.getElementById("__lanternNc" + j).style.display = "none";
                document.getElementById("lanternnum" + j).style.display = "";
                if (j == Lantern.info.length - 1) {
                    document.getElementById("LanternN" + j).className = "div_off3";
                }
                else {
                    document.getElementById("LanternN" + j).className = "div_off2";
                }
                if (j == Lantern.info.length - 1) {
                    document.getElementById("LanternN" + j).style.width = (Lantern.width - onLength - numtemp - 7) + "px";
                }
                else {
                    numtemp += offLength;
                }
                document.getElementById("LanternN" + j).style.width = Lantern.navyCtr[j][0] + "px";
                Lantern.navyCtr[j][2] = (Lantern.navyCtr[j][1] - Lantern.navyCtr[j][0]) / Lantern.navyTime;
            }
            else//已选
            {
                Lantern.navyCtr[j][1] = onLength;
                document.getElementById("LanternN" + j).style.width = (Lantern.navyCtr[j][0]) + "px";
                Lantern.navyCtr[j][2] = (Lantern.navyCtr[j][1] - Lantern.navyCtr[j][0]) / Lantern.navyTime;

            }
        }
        document.getElementById("LanternImg" + i).style.display = "";
        if (Lantern.onChange) {
            document.getElementById("LanternN" + i).onclick = function() { window.open(Lantern.info[this.name][2]); };
            document.getElementById("LanternN" + Lantern.showNum).onclick = function() { if (!Lantern.onChange) { Lantern.onChange = true; Lantern.setNavy(this.name); } };
            document.getElementById("LanternImg" + i).style.zIndex = 0;
            document.getElementById("LanternImg" + Lantern.showNum).style.zIndex = -1;
            Lantern.oInterval = setInterval('Lantern.changeLantern(' + i + ')', 10);
        }
    },

    imgMoveOver: false,
    navyMoveOver: false,
    changeLantern: function(i) {
        if (Lantern.otimeOut != null)
            clearTimeout(Lantern.otimeOut);
        //move
        if (!Lantern.navyMoveOver)
            Lantern.moveNavy(i);
        if (!Lantern.imgMoveOver) {
            Lantern.moveImg(i);
        }
        else {
            Lantern.flashImg(i);
        }
    },

    moveNavy: function(select) {
        var breaktime = 0;
        for (var i = 0; i < Lantern.info.length; i++) {
            if ((Lantern.navyCtr[i][2] > 0 && document.getElementById("LanternN" + i).offsetWidth < Lantern.navyCtr[i][1]) || (Lantern.navyCtr[i][2] < 0 && document.getElementById("LanternN" + i).offsetWidth > Lantern.navyCtr[i][1])) {
                if (i == select) {
                    document.getElementById("LanternN" + i).style.width = (document.getElementById("LanternN" + i).offsetWidth + Lantern.navyCtr[i][2] - 7) + "px";
                }
                else {
                    document.getElementById("LanternN" + i).style.width = (document.getElementById("LanternN" + i).offsetWidth + Lantern.navyCtr[i][2]) + "px";
                }

            }
            else {
                if (i == select) {
                    for (var j = 0; j < Lantern.info.length; j++) {
                        document.getElementById("LanternN" + j).style.width = Lantern.navyCtr[j][1] + "px";
                    }

                    Lantern.navyMoveOver = true;
                    break;
                }
            }
        }
    },

    moveImg: function(i) {
        if (document.getElementById("LanternImg" + i).offsetLeft > 0) {
            document.getElementById("LanternImg" + i).style.left = (document.getElementById("LanternImg" + i).offsetLeft - Lantern.picMoveSpeed) + "px";
        }
        else {
            document.getElementById("LanternImg" + i).style.left = "0px";
            document.getElementById("LanternImg" + Lantern.showNum).style.left = Lantern.width + "px";
            Lantern.imgMoveOver = true;
        }
    },

    flashImg: function(i) {
        document.getElementById("LanternImg" + i).style.opacity = "100";
        Lantern.showNum = i;
        Lantern.imgMoveOver = false;
        Lantern.navyMoveOver = false;
        Lantern.opacityNum = 101;
        Lantern.cycNum = i;
        clearInterval(Lantern.oInterval);
        Lantern.otimeOut = setTimeout("Lantern.otimeOut=Lantern.cycLantern()", Lantern.timeOut_time);
        Lantern.onChange = false;
    },

    cycLantern: function() {
        if (!Lantern.onChange) {
            Lantern.onChange = true;
            if (Lantern.cycNum == Lantern.info.length - 1)
                Lantern.cycNum = 0;
            else
                Lantern.cycNum++;
            Lantern.setNavy(Lantern.cycNum)
        }
    },
    moveprevious: function() {
        if (!Lantern.onChange) {

            if (Lantern.cycNum > 0)
                Lantern.cycNum -= 1;
            else
                return;

            Lantern.onChange = true;
            Lantern.setNavy(Lantern.cycNum)
        }
    },
    movenext: function() {
        if (!Lantern.onChange) {

            if (Lantern.cycNum >= Lantern.info.length - 1)
                return;
            else
                Lantern.cycNum += 1;

            Lantern.onChange = true;
            Lantern.setNavy(Lantern.cycNum);
        }
    }


};

var productDiv = new Array();
productDiv = [["showproduct1,imgproduct1", "productlist1"], ["showproduct2,imgproduct2", "productlist2"], ["showproduct3,imgproduct3", "productlist3"], ["showproduct4,imgproduct4", "productlist4"]];

var playnum = 1;

function showproductdiv(id) {
    if (id == 0) { id = playnum; }
    for (i = 1; i <= 4; i++) {

        if (i == id) {
            $obj("showproduct" + id).style.display = "inline";
            $obj("imgproduct" + id).style.display = "";
            $obj("productlist" + id).style.display = "";
        }
        else {
            $obj("showproduct" + i).style.display = "none";
            $obj("imgproduct" + i).style.display = "";
            $obj("productlist" + i).style.display = "none";
        }



    }

    if (playnum == 4) { playnum = 1; } else { playnum++; }

}
var myplay;
function ProductDivPlay(id) {
    if (id == "") { id = 0; } else { playnum = id; }

    myplay = setInterval("showproductdiv(0)", 8000);
}

function ProductDivStop() {

    clearInterval(myplay);
}