/*
格式: new RotatorAD(轮播广告数组, 默认广告数组, 层id)
说明: 第一次访问随机出现，以后访问顺序轮播；自动过滤过期广告；cookie时间24小时；轮播广告数量不足时，从默认广告中补充
*/
if(typeof(RotatorAD)!='function'){
    var RotatorAD = function(rad, nad, div_id) {

        var date = new Date();
        var id = 0;
        var max = 99;
        var url = document.location.href;
        var cookiename = 'SinaRot' + escape(url.substr(url.indexOf('/', 7), 2) + url.substring(url.lastIndexOf('/')));
        var timeout = 1440; //24h
        var w = rad.width;
        var h = rad.height;
        var num = rad.num;
        var ary = new Array();
        //过滤无效广告
        for (var i = 0; i < rad.length; i++) {
            var start = strToDate(rad[i][2].replace('<startdate>', '').replace('</startdate>', ''));
            var end = strToDate(rad[i][3].replace('<enddate>', '').replace('</enddate>', ''), true);
            if (date > start && date < end) {
                ary.push([rad[i][0], rad[i][1], rad[i][4], rad[i][5] ? rad[i][5] : '0', rad[i][6] ? rad[i][6] : '0']);
            }
        }
        //过滤无效默认
        var vnad = new Array();
        for (var i = 0; i < nad.length; i++) {
            if (nad[i][2] == null || nad[i][2] == 'null') {
                vnad.push([nad[i][0], nad[i][1], '', nad[i][5] ? nad[i][5] : '0', nad[i][6] ? nad[i][6] : '0']);
            } else {
                var start = strToDate(nad[i][2].replace('<startdate>', '').replace('</startdate>', ''));
                var end = strToDate(nad[i][3].replace('<enddate>', '').replace('</enddate>', ''), true);
                if (date > start && date < end) {
                    vnad.push([nad[i][0], nad[i][1], '', '0', '0']);
                }
            }
        }
        //补位
        var nn = 0;
        if (vnad.length > 0) {
            for (var i = 0; i < rad.num; i++) {
                if (i > ary.length - 1) {
                    ary.push([vnad[nn][0], vnad[nn][1], '', vnad[nn][3] ? vnad[nn][3] : '0', vnad[nn][4] ? vnad[nn][4] : '0']);
                    if (++nn > nad.length - 1) nn = 0;
                }
            }
        } else {
            num = ary.length;
        }
        //排序(同步有序号的广告)
        ary.sort(function(x, y) { return x[3] - y[3]; });
        //取id
        if (typeof (globalRotatorId) == 'undefined' || globalRotatorId == null || isNaN(globalRotatorId)) {
            curId = G(cookiename);
            curId = curId == '' ? Math.floor(Math.random() * max) : ++curId;
            if (curId > max || curId == null || isNaN(curId)) curId = 0;
            S(cookiename, curId, timeout);
            globalRotatorId = curId;
        }
        id = globalRotatorId % num + 1;
        //Show AD
        if (id == 0 || ary.length == 0) return; //如果没有广告则不显示
        if (id == -1) id = 1; //当只有一个广告时：始终显示第一个

        var n = id - 1;

        var type = ary[n][0].substring(ary[n][0].length - 3).toLowerCase();
        var od = document.getElementById(div_id);
        if (type == 'swf') {
            var of = new sinaFlash(ary[n][0], div_id + '_swf', w, h, "7", "", false, "High");
            of.addParam("wmode", "opaque");
            of.addParam("allowScriptAccess", "always");
            of.addVariable("adlink", escape(ary[n][1]));
            of.write(div_id);
            document.write('<iframe src="" style="display:none"></iframe>'); //for FF bug
        } else if (type == 'jpg' || type == 'gif') {
            od.innerHTML = '<a href="' + ary[n][1] + '" target="_blank"><img alt="' + ary[n][3] + '" src="' + ary[n][0] + '" border="0" width="' + w + '" height="' + h + '" /></a>';
            document.write('<iframe src="" style="display:none"></iframe>'); //for FF bug
        } else if (type == 'htm' || type == 'tml') {
            od.innerHTML = '<iframe id="ifm_' + div_id + '" frameborder="0" scrolling="no" width="' + w + '" height="' + h + '"></iframe>';
            document.getElementById('ifm_' + div_id).src = ary[n][0];
        } else if (type == '.js') { //js
            document.write('<script language="javascript" type="text/javascript" src="' + ary[n][0] + '"></scr' + 'ipt>');
            document.write('<iframe src="" style="display:none"></iframe>'); //for FF bug
        } else { //textlink
            if (ary[n][4] == "True") {
                document.write('<a class="focus" href="' + ary[n][1] + '"  target="_blank">' + decodeURI(ary[n][0]) + '</a>');
            }
            else {
                document.write('<a href="' + ary[n][1] + '"  target="_blank">' + decodeURI(ary[n][0]) + '</a>');
            }
        }
        if (ary[n][2] != "" && ary[n][2] != null) { //ad tracker
            var oImg = new Image();
            oImg.src = ary[n][2];
        }
        function G(N) {
            var c = document.cookie.split("; ");
            for (var i = 0; i < c.length; i++) {
                var d = c[i].split("=");
                if (d[0] == N) return unescape(d[1]);
            } return '';
        };
        function S(N, V, Q) {
            var L = new Date();
            var z = new Date(L.getTime() + Q * 60000);
            document.cookie = N + "=" + escape(V) + ";path=/;expires=" + z.toGMTString() + ";";
        };
        function strToDate(str, ext) {
            var arys = new Array();
            arys = str.split('-');
            var newDate = new Date(arys[0], arys[1] - 1, arys[2], 9, 0, 0);
            if (ext) {
                newDate = new Date(newDate.getTime() + 1000 * 60 * 60 * 24);
            }
            return newDate;
        }

    }
}