function setday(inputObj, dateFormatStyle, beginDate, endDate, lang) {
    if (null == inputObj) { return null; }
    new Calendar(inputObj, dateFormatStyle, beginDate, endDate, lang).show();
}

function setmonth(inputObj, dateFormatStyle, beginDate, endDate, lang) {
    if (null == inputObj) { return null; }
    new Calendar(inputObj, dateFormatStyle, beginDate, endDate, lang, "m").show();
}

Calendar.prototype.style = function () {
    var strStyle = "<style type='text/css'>";
    strStyle += ".calendar {font-size:12px; margin:0;padding:0px;border:0px solid #6590a8;background-color:#1e2c34;height:300px;}";
    strStyle += ".calendar ul {list-style-type:none; margin:0; padding:0;vertical-align:middle;}";
    strStyle += ".calendar li {float:left;color:#9e9e9e;}.calendar b{color:#fff;font-weight:bold;}";
    strStyle += ".calendar .day li {height:20px;}";
    strStyle += ".calendar .day li,.calendar .date li{float:left;width:14.13%;height:20px;line-height:20px;text-align:center;}";
    strStyle += ".calendar .day li{font-weight:bold;} .calendar .date li{background-color:#1e2c34;}";
    strStyle += ".calendar .month li{float:left;width:24.8%;height:20px;line-height:20px;text-align:center;background-color:#1e2c34;}";
    strStyle += ".calendar li a{ text-decoration:none; font-family:Tahoma; font-size:11px; color:#cecece}";
    strStyle += ".calendar li:hover {cursor:pointer;color:#cecece; text-decoration:none;background-color:#1e2c34;}";
    strStyle += ".calendar .date li:hover, .calendar .month li:hover{cursor:pointer;color:#cecece; text-decoration:none;background-color:#1e2c34;}";
    strStyle += ".calendarlihover {color:#cecece;text-decoration:none;background-color:#1e2c34;}";
    strStyle += ".calendar li a.hasArticle {font-weight:bold; color:#f60 !important}";
    strStyle += ".lastMonthDate, .nextMonthDate {color:#bbb;font-size:11px}";
    strStyle += ".selectThisYear, .selectThisMonth{text-decoration:none; margin:0px; color:#e4e4e4; font-weight:bold}";
    strStyle += ".calendar .LastMonth, .calendar .NextMonth{text-decoration:none; color:#e4e4e4; font-size:18px; font-weight:bold; line-height:16px;}";
    strStyle += ".calendarTitle{background:#1e2c34;text-align:center;height:20px;line-height:20px;clear:both;width:100%;}";
    strStyle += ".calendarTitle .mark{text-decoration:none;color:#e4e4e4;font-family:Tahoma;font-size:18px;font-weight:normal;}";
    strStyle += ".today{ background-color:#364f5e;border:0px solid #364f5e;padding:0 1px;}";
    strStyle += ".today a { color:#eb6100; }";
    strStyle += ".calendarBottom {text-align:center;height:20px;line-height:20px;clear:both;width:100%;border-top:1px solid #ddd;}";
    strStyle += ".calendarBottom li{float:left;height:20px;line-height:20px;font-weight:bold;text-align:center;}";
    strStyle += "</style>";
    return strStyle;
}

function getFrameDocument(frame) {
    if (frame.contentDocument) { // DOM
        var doc = frame.contentDocument;
    } else if (frame.contentWindow) { // IE win
        var doc = frame.contentWindow.document;
    }
    return doc;
}

String.prototype.toDate = function (format) {
    if (null == format) format = "yyyy-MM-dd";
    var pattern = format.replace("yyyy", "(\\~1{4})").replace("yy", "(\\~1{2})")
		.replace("MM", "(\\~1{2})").replace("M", "(\\~1{1,2})")
		.replace("dd", "(\\~1{2})").replace("d", "(\\~1{1,2})").replace(/~1/g, "d");

    var returnDate;
    if (new RegExp(pattern).test(this)) {
        var yPos = format.indexOf("yyyy");
        var mPos = format.indexOf("MM");
        var dPos = format.indexOf("dd");
        if (mPos == -1) mPos = format.indexOf("M");
        if (yPos == -1) yPos = format.indexOf("yy");
        if (dPos == -1) dPos = format.indexOf("d");
        var pos = new Array(yPos + "y", mPos + "m", dPos + "d");
        var data = { y: 0, m: 0, d: 1 };
        var m = this.match(pattern);
        for (var i = 1; i < m.length; i++) {
            if (i == 0) return;
            var flag = pos[i - 1].split('')[1];
            data[flag] = m[i];
            //alert(pos[i-1] + ",flag:"+flag + ",i:" + i + "," + data[flag]);
        };

        if (data.y.toString().length == 2) {
            data.y = parseInt("20" + data.y);
        }
        data.m = data.m - 1;
        returnDate = new Date(data.y, data.m, data.d);
    }
    if (returnDate == null || isNaN(returnDate)) returnDate = new Date();
    return returnDate;

};

Date.prototype.format = function (style) {
    var o = {
        "M+": this.getMonth() + 1, //month   
        "d+": this.getDate(),      //day   
        "h+": this.getHours(),     //hour   
        "m+": this.getMinutes(),   //minute   
        "s+": this.getSeconds(),   //second   
        "w+": "日一二三四五六".charAt(this.getDay()),   //week   
        "q+": Math.floor((this.getMonth() + 3) / 3),  //quarter   
        "S": this.getMilliseconds() //millisecond   
    }
    if (/(y+)/.test(style)) {
        style = style.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
    }
    for (var k in o) {
        if (new RegExp("(" + k + ")").test(style)) {
            style = style.replace(RegExp.$1, RegExp.$1.length == 1 ? o[k] : ("00" + o[k]).substr(("" + o[k]).length));
        }
    }
    return style;
};

Date.prototype.dateAdd = function (interval, number) {
    switch (interval) {
        case "y":
            return new Date(this.getFullYear() + number, this.getMonth(), this.getDate());
            break;
        case "m":
            return new Date(this.getFullYear(), this.getMonth() + number, checkDate(this.getFullYear(), this.getMonth() + number, this.getDate()));
            break;
        case "d":
            return new Date(this.getFullYear(), this.getMonth(), this.getDate() + number);
            break;
        case "w":
            return new Date(this.getFullYear(), this.getMonth(), 7 * number + this.getDate());
            break;
    }
}

function checkDate(year, month, date) {
    var enddate = ["31", "28", "31", "30", "31", "30", "31", "31", "30", "31", "30", "31"];
    var returnDate = "";
    if (year % 4 == 0) {
        enddate[1] = "29";
    }
    if (date > enddate[month]) {
        returnDate = enddate[month];
    } else {
        returnDate = date;
    }
    return returnDate;
}

Calendar.language = {
    "title": [["", ""], ["年", "月"]],
    "months": [["一月", "二月", "三月", "四月", "五月", "六月", "七月", "八月", "九月", "十月", "十一月", "十二月"],
			["JAN", "FEB", "MAR", "APR", "MAY", "JUN", "JUL", "AUG", "SEP", "OCT", "NOV", "DEC"]
        	],
    "weeks": [["日", "一", "二", "三", "四", "五", "六"],
  			["S", "M", "T", "W", "T", "F", "S"]
			],
    weekday: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
    "clear": [["清空"], ["Clear"]],
    "today": [["今天", "当月"], ["Today", "Current"]],
    "close": [["关闭"], ["Close"]]
};

function Calendar(inputObj, dateFormatStyle, beginDate, endDate, lang, type) {
    this.beginDate = "1900-01-01".toDate();
    this.endDate = "2020-01-01".toDate();
    this.lang = 0; //default language
    this.type = "d";
    this.dateFormatStyle = "yyyy-MM-dd";

    if (null != type) {
        this.type = type;
        if ("m" == this.type) {
            this.dateFormatStyle = "yyyy-MM";
        }
    }

    if (dateFormatStyle != null) {
        this.dateFormatStyle = dateFormatStyle;
    }

    this.currentDate = new Date();

    var currDate = new Date();
    if (null != inputObj.value && "" != inputObj.value) {
        currDate = inputObj.value.toDate(this.dateFormatStyle);
    }

    if (null != currDate) {
        this.date = currDate;
    } else {
        this.date = new Date();
    }


    if (null != beginDate) {
        this.beginDate = beginDate;
    }
    if (null != endDate) {
        this.endDate = endDate;
    }
    if (lang != null) {
        this.lang = lang;
    }

    this.dateControl = inputObj;
    this.panel = document.getElementById("calendarPanel");
    this.iframe = document.getElementById("calendarIframe");
    this.isFocus = false;

    this.draw();
}

Calendar.prototype.draw = function () {
    var currDate = this.date.format("yyyy-MM").toDate("yyyy-MM");
    if (currDate < this.beginDate) {
        this.date = this.beginDate;
    }

    if (currDate > this.endDate) {
        this.date = this.endDate;
    }

    this.year = this.date.getFullYear();
    this.month = this.date.getMonth();
    var head = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">' +
	'<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />' +
  this.style() + '</head><body style="padding:0px;margin:0px;">';
    var thisMonthFirstDate = this.date.dateAdd("d", 1 - this.date.getDate());
    var lastMonthEndDate = thisMonthFirstDate.dateAdd("d", -1);
    var lastMonthDate = thisMonthFirstDate.getDay();
    lastMonthEndDate = lastMonthEndDate.getDate();
    var thisMonthLastDate = thisMonthFirstDate.dateAdd("m", 1).dateAdd("d", -1);
    var thisMonthEndDate = thisMonthLastDate.getDate();
    var thisMonthEndDay = thisMonthLastDate.getDay();

    var lis = "<div id='calendar' class='calendar' style='width:";
    if ("d" == this.type) {
        lis += "150";
    } else {
        lis += "120";
    }
    lis += "px;'>";
    lis += "<div class='calendarTitle'><ul>";
    lis += "<li id='PrevYear' class='mark' style='width:12%;' title='Previous Year'>&laquo;</li>";
    if ("d" == this.type) {
        lis += "<li id='PrevMonth' class='mark' style='width:12%;' title='Previous Month'>&lsaquo;</li>";
        lis += "<li style='width:30%;'><span id='selectThisYear' class='selectThisYear'>" + this.date.getFullYear() + "</span>" + Calendar.language["title"][this.lang][0] + "</li>";
        if (0 == this.lang) {
            lis += "<li style='width:20%;'><span id='selectThisMonth' class='selectThisMonth'>" + Calendar.language["months"][this.lang][this.date.getMonth()] + "</span></li>";
        } else {
            lis += "<li style='width:20%;'><span id='selectThisMonth' class='selectThisMonth'>" + (this.date.getMonth() + 1) + "</span>" + Calendar.language["title"][this.lang][0] + "</li>";
        }
        lis += "<li id='NextMonth' class='mark' style='width:12%;' title='Next Month'>&rsaquo;</li>";
        lis += "<li id='NextYear' class='mark' style='width:12%;' title='Next Year'>&raquo;</li></ul></div>";
        lis += "<div class='calendarBody'>";
        lis += "<ul class='day'>";
        for (var i = 0; i < Calendar.language.weeks[this.lang].length; i++) {
            lis += "<li title='" + Calendar.language.weekday[i] + "' style='color:#fff;'>" + Calendar.language.weeks[this.lang][i] + "</li>";
        }
        lis += "</ul><ul class='date' id='thisMonthDate'>";
        var lastMonthLis = "";
        for (var i = 0; i < lastMonthDate; i++) { // Last Month's Date
            //alert(lastMonthDate + "," + lastMonthEndDate);
            lastMonthLis = "<li class='lastMonthDate'>" + lastMonthEndDate + "</li>" + lastMonthLis;
            lastMonthEndDate--;
        }
        lis += lastMonthLis;
        for (i = 1; i <= thisMonthEndDate; i++) { // Current Month's Date
            var currentDate = thisMonthFirstDate.dateAdd("d", (i - 1));
            if (currentDate < this.beginDate || currentDate > this.endDate) {
                lis += "<li class='lastMonthDate'>" + i + "</li>";
                continue;
            }
            lis += "<li class='thisMonth' title='" + currentDate.format("yyyy-MM-dd") + "'><a href='javascript:void(0);' ";
            if (currentDate.format("yyyy-MM-dd") == (this.date).format("yyyy-MM-dd")) {
                lis += "class='today' ";
            }
            lis += ">" + i + "</a></li>";
        }
        var j = 1;
        for (i = thisMonthEndDay; i < 6; i++) { // Next Month's Date
            lis += "<li class='nextMonthDate'>" + j + "</li>";
            j++;
        }
        lis += "</ul>"

        lis += "</div>"; //close calendarBody
        lis += "<div class='calendarBottom'><ul>";
        lis += "<li id='emptyCalendar' style='width:27%;' title='Clear'>&nbsp;</li>"; //" + Calendar.language.clear[this.lang] +"
        lis += "<li id='selectCurrent' style='width:45%;' title='Today'>&nbsp;</li>"; //" + Calendar.language.today[this.lang][0] +"
    } else {
        lis += "<li style='width:74%;'><span id='selectThisYear' class='selectThisYear'>" + this.date.getFullYear() + "</span>" + Calendar.language["title"][this.lang][0] + "</li>";
        lis += "<li id='NextYear' class='mark' style='width:12%;' title='Next Year'>&raquo;</li></ul></div>";
        lis += "<div class='calendarBody'>";
        lis += "</ul><ul class='month' id='thisMonth'>";
        for (var i = 1; i <= 12; i++) {
            var currentDate = (this.year + "-" + (i > 9 ? i : "0" + i)).toDate("yyyy-MM");
            if (currentDate < this.beginDate || currentDate > this.endDate) {
                lis += "<li class='lastMonthDate'>" + i + "</li>";
                continue;
            }
            lis += "<li class='thisMonth' title='" + this.year + "-" + (i > 9 ? i : "0" + i) + "-01'><a href='javascript:void(0);'";
            if ((this.year + "-" + (i > 9 ? i : "0" + i)) == (this.date).format("yyyy-MM")) {
                lis += " class='today' ";
            }
            lis += ">" + i + "</a></li>";
        }
        lis += "</ul>"

        lis += "</div>"; //close calendarBody
        lis += "<div class='calendarBottom' style='height:50px;'><ul>";
        lis += "<li id='emptyCalendar' style='width:27%;' title='Clear'>&nbsp;</li>"; //" + Calendar.language.clear[this.lang] +"
        lis += "<li id='selectCurrent' style='width:45%;' title='Current Month'>&nbsp;</li>"; //" + Calendar.language.today[this.lang][0] +"
    }

    lis += "<li id='closeCalendar' style='width:27%;' title='Close'>&nbsp;</li>"; //" + Calendar.language.close[this.lang] +"
    lis += "</ul></div>"; //close calendarBottom
    lis += "</div>"; //close calendar
    lis += "</body></html>";
    var doc = getFrameDocument(this.iframe);
    doc.writeln(head);
    doc.writeln(lis);
    doc.close();
    this.document = doc;

    this.bingEvent();
}

Calendar.prototype.bingEvent = function () {
    var calendar = this;

    this.setAutoHeight();

    this.panel.onmouseover = function () { calendar.isFocus = true; }
    this.panel.onmouseout = function () { calendar.isFocus = false; }

    this.dateControl.onblur = function () {
        if (!calendar.isFocus) {
            calendar.hide();
        }
    }

    this.getElementById("selectCurrent").onclick = function () {
        calendar.date = new Date();
        calendar.valueSelected(calendar.date);
        calendar.hide();
    }
    this.getElementById("emptyCalendar").onclick = function () { calendar.dateControl.value = ""; calendar.hide(); }
    this.getElementById("closeCalendar").onclick = function () { calendar.hide(); }

    this.getElementById("PrevYear").onclick = function () {
        calendar.date = calendar.date.dateAdd("y", -1);
        calendar.draw();
    }

    if (this.getElementById("PrevMonth")) {
        this.getElementById("PrevMonth").onclick = function () {
            calendar.date = calendar.date.dateAdd("m", -1);
            calendar.draw();
        }
        this.getElementById("NextMonth").onclick = function () {
            calendar.date = calendar.date.dateAdd("m", 1);
            calendar.draw();
        }
    }

    this.getElementById("NextYear").onclick = function () {
        calendar.date = calendar.date.dateAdd("y", 1);
        calendar.draw();
    }

    this.getElementById("selectThisYear").onclick = function () { calendar.selectThisYear(); }
    if ("d" == this.type) {
        this.getElementById("selectThisMonth").onclick = function () { calendar.selectThisMonth(); }
    }

    var elements = getElementsByClassName(this.document, "li", "thisMonth");
    for (var i = 0; i < elements.length; i++) {
        elements[i].onclick = function () {
            calendar.date = this.title.toDate();
            calendar.valueSelected(calendar.date);
            calendar.hide();
        }
    }
}

Calendar.prototype.selectThisYear = function () {
    var calendar = this;
    var curYear = this.date.getFullYear();
    var beginYear = this.beginDate.getFullYear();
    var endYear = this.endDate.getFullYear();
    var spanObj = this.getElementById("selectThisYear");
    var selectStr = "<select style='font-size:10px;'>";
    for (var i = endYear; i >= beginYear; i--) {
        selectStr += "<option value='" + i + "'>" + i + "</option>";
    }
    selectStr += "</select>";
    spanObj.innerHTML = selectStr;
    var selectYearObj = spanObj.childNodes(0);
    selectYearObj.value = curYear;
    selectYearObj.onchange = function () {
        calendar.date.setFullYear(selectYearObj.value);
        calendar.draw();
    }
}

Calendar.prototype.selectThisMonth = function () {
    var calendar = this;
    var curMonth = this.date.getMonth() + 1;
    var curYear = this.date.getFullYear();
    var endYear = this.endDate.getFullYear();
    var endMonth = 12;
    if (curYear == endYear) {
        endMonth = this.endDate.getMonth + 1;
    }
    var spanObj = this.getElementById("selectThisMonth");
    var selectStr = "<select style='font-size:10px;'>";
    for (var i = 1; i <= endMonth; i++) {
        selectStr += "<option value='" + i + "'>" + Calendar.language["months"][this.lang][i - 1] + "</option>";
    }
    selectStr += "</select>";
    spanObj.innerHTML = selectStr;
    var selectMonthObj = spanObj.childNodes(0);
    selectMonthObj.value = curMonth;
    selectMonthObj.onchange = function () {
        calendar.date.setMonth(selectMonthObj.value - 1);
        calendar.draw();
    }
}

Calendar.prototype.valueSelected = function (date) {
    this.dateControl.value = date.format(this.dateFormatStyle);
}

Calendar.prototype.setAutoHeight = function () {
    var height = this.document.body.scrollHeight;
    var width = this.getElementById("calendar").style.width;
    width = (parseInt(width.substr(0, width.length - 1)) + 2) + "px";
    this.iframe.style.height = height;
    this.panel.style.height = height;
    this.panel.style.width = width;
}

Calendar.prototype.getElementById = function (id) {
    if (typeof (id) != "string" || id == "") return null;
    if (null == this.document) return null;
    if (this.document.getElementById) return this.document.getElementById(id);
    if (this.document.all) return this.document.all(id);
    try { return eval(id); } catch (e) { return null; }
}

Calendar.prototype.getElementsByTagName = function (tagName) {
    if (null == this.document) return null;
    if (this.document.getElementsByTagName) return this.document.getElementsByTagName(tagName);
    if (this.document.all) return this.document.all.tags(tagName);
}

function getElementsByClassName(oElm, strTagName, strClassName) {
    var arrElements = (strTagName == "*" && oElm.all) ? oElm.all : oElm.getElementsByTagName(strTagName);
    var arrReturnElements = new Array();
    strClassName = strClassName.replace(/\-/g, "\\-");
    var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
    var oElement;
    for (var i = 0; i < arrElements.length; i++) {
        oElement = arrElements[i];
        if (oRegExp.test(oElement.className)) {
            arrReturnElements.push(oElement);
        }
    }
    return (arrReturnElements)
}


Calendar.prototype.getAbsPoint = function (e) {
    var x = e.offsetLeft;
    var y = e.offsetTop;
    while (e = e.offsetParent) {
        x += e.offsetLeft;
        y += e.offsetTop;
    }
    return { "x": x, "y": y };
}

Calendar.prototype.show = function () {
    var xy = this.getAbsPoint(this.dateControl);
    this.panel.style.left = xy.x + "px";
    this.panel.style.top = (xy.y + this.dateControl.offsetHeight) + "px";
    this.setDisplayStyle("select", "hidden");
    this.panel.style.visibility = "visible";
}

Calendar.prototype.hide = function () {
    this.setDisplayStyle("select", "visible");
    this.panel.style.visibility = "hidden";
    this.isFocus = false;
}

Calendar.prototype.setDisplayStyle = function (tagName, style) {
    var tags = this.getElementsByTagName(tagName)
    for (var i = 0; i < tags.length; i++) {
        if (tagName.toLowerCase() == "select" &&
       (tags[i].name == "calendarYear" ||
      tags[i].name == "calendarMonth")) {
            continue;
        }
        tags[i].style.visibility = style;
    }
}

document.write('<div id="calendarPanel" style="position:absolute;visibility:hidden;z-index:9999;background-color:#FFFFFF;font-size:12px;width:20px;">');
document.write("<iframe id='calendarIframe' scrolling='no' frameborder='0' width='100%' height='100%'></iframe></div>");